Update dependency protobuf to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
protobuf	==6.33.6 → ==7.34.1

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: haproxy-operator/uv.lock

Command failed: uv lock --upgrade-package protobuf
Using CPython 3.14.4 interpreter at: /opt/containerbase/tools/python/3.14.4/bin/python3
   Updating https://github.com/charmed-kubernetes/charm-interface-hacluster (1.32+ck2)
    Updated https://github.com/charmed-kubernetes/charm-interface-hacluster (d91e83a1fa59a13f4160febfe536c68dc762e436)
  × No solution found when resolving dependencies:
  ╰─▶ Because only the following versions of grpcio-reflection are available:
          grpcio-reflection<=1.76.0
          grpcio-reflection==1.78.0
          grpcio-reflection==1.78.1
          grpcio-reflection==1.80.0
      and all of:
          grpcio-reflection>=1.76.0,<=1.78.0
          grpcio-reflection>=1.80.0
      depend on protobuf>=6.31.1,<7.0.0, we can conclude that all of:
          grpcio-reflection>=1.76.0,<1.78.1
          grpcio-reflection>1.78.1
      depend on protobuf>=6.31.1,<7.0.0.
      And because grpcio-reflection==1.78.1 was yanked
      (reason: https://github.com/grpc/grpc/issues/41725) and
      haproxy-operator:integration depends on grpcio-reflection>=1.76.0,
      we can conclude that haproxy-operator:integration depends on
      protobuf>=6.31.1,<7.0.0.
      And because haproxy-operator:integration depends on protobuf==7.34.1 and
      your project requires haproxy-operator:integration, we can conclude that
      your project's requirements are unsatisfiable.

      hint: Pre-releases are available for `grpcio-reflection` in the
      requested range (e.g., 1.80.0rc1), but pre-releases weren't enabled
      (try: `--prerelease=allow`)

[github-actions]

Test results for commit 298a311

Test coverage for 298a311

Name                                       Stmts   Miss Branch BrPart  Cover   Missing
--------------------------------------------------------------------------------------
lib/charms/haproxy/v0/ddos_protection.py     154     51     34      8    64%   157-174, 183-187, 288, 316-318, 323, 326-330, 342-344, 381, 387, 393, 396, 424, 495-498, 510-529
src/charm.py                                  21      0      0      0   100%
src/state.py                                  43      0      0      0   100%
--------------------------------------------------------------------------------------
TOTAL                                        218     51     34      8    73%

Static code analysis report

Run started:2026-04-26 15:28:25.629651+00:00

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 333
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[github-actions]

Test results for commit 298a311

Test coverage for 298a311

Name                      Stmts   Miss Branch BrPart  Cover   Missing
---------------------------------------------------------------------
src/charm.py                 88     29     14      3    63%   97-98, 108-113, 138, 145-157, 161-176, 184-199
src/policy.py                66     37      2      0    43%   30-32, 37-38, 43-53, 58-59, 64-65, 78-92, 115-117, 140-141, 159-176, 187-197, 208-211
src/state/database.py        32      2      6      2    89%   76, 79
src/state/policy.py          62      2     10      2    94%   94, 106
src/state/validation.py      44     18      0      0    59%   57-59, 61-63, 74-87
---------------------------------------------------------------------
TOTAL                       292     88     32      7    68%

Static code analysis report

Run started:2026-04-26 15:28:25.094385+00:00

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1152
  Total lines skipped (#nosec): 10
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[github-actions]

Test results for commit 298a311

Test coverage for 298a311

Name                                        Stmts   Miss  Cover
---------------------------------------------------------------
haproxy_route_policy/__init__.py                0      0   100%
haproxy_route_policy/settings.py               30      1    97%
haproxy_route_policy/test_settings.py           4      0   100%
haproxy_route_policy/urls.py                    5      0   100%
manage.py                                      11      2    82%
policy/__init__.py                              0      0   100%
policy/admin.py                                22      5    77%
policy/apps.py                                  3      0   100%
policy/db_models.py                            50      2    96%
policy/management/__init__.py                   0      0   100%
policy/management/commands/__init__.py          0      0   100%
policy/middleware.py                           16      4    75%
policy/migrations/0001_initial.py               7      0   100%
policy/migrations/0002_rule.py                  5      0   100%
policy/migrations/0003_alter_rule_kind.py       4      0   100%
policy/migrations/__init__.py                   0      0   100%
policy/rule_engine.py                          42      6    86%
policy/serializers.py                          30      4    87%
policy/tests/__init__.py                        0      0   100%
policy/tests/test_auth.py                      36     20    44%
policy/tests/test_models.py                    85      0   100%
policy/tests/test_rule_engine.py              117      0   100%
policy/tests/test_views.py                    201      0   100%
policy/urls.py                                  3      0   100%
policy/views.py                                95     16    83%
---------------------------------------------------------------
TOTAL                                         766     60    92%

Static code analysis report

Run started:2026-04-26 15:28:24.264679+00:00

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1680
  Total lines skipped (#nosec): 1
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[github-actions]

Test results for commit 298a311

Test coverage for 298a311

Name                               Stmts   Miss Branch BrPart  Cover   Missing
------------------------------------------------------------------------------
src/charm.py                          45      9      2      0    77%   65-91, 96-98
src/haproxy_spoe_auth_service.py      44     16      2      0    61%   56-64, 76-82, 93-117
src/state.py                          55     15      6      1    67%   64-66, 79, 125-146
------------------------------------------------------------------------------
TOTAL                                144     40     10      1    68%

Static code analysis report

Run started:2026-04-26 15:28:25.731197

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 409
  Total lines skipped (#nosec): 1
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 1

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):