[TASK] Update phpunit/phpunit to v13

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
phpunit/phpunit (source)	^11.5 || ^12.1 → ^13.0

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Release Notes

sebastianbergmann/phpunit (phpunit/phpunit)

v13.0.0

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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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: composer.lock

Command failed: composer update phpunit/phpunit:13.0.3 --with-dependencies --ignore-platform-req=ext-* --ignore-platform-req=lib-* --no-ansi --no-interaction --no-scripts --no-autoloader --no-plugins --minimal-changes
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires phpunit/phpunit ^13.0, found phpunit/phpunit[13.0.0, 13.0.1, 13.0.2, 13.0.3] but these were not loaded, likely because it conflicts with another require.
  Problem 2
    - phpunit/phpcov is locked to version 11.0.4 and an update of this package was not requested.
    - phpunit/phpcov 11.0.4 requires phpunit/phpunit ^12.5.9 -> found phpunit/phpunit[12.5.9, 12.5.10, 12.5.11, 12.5.12] but it conflicts with your root composer.json require (^13.0).

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.