gateway: bump actions/setup-go from 6.0.0 to 6.1.0

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@4469467...4dc6199)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/dummy.yml

@@ -33,7 +33,7 @@ jobs:
         if: false
       - uses: VirtusLab/scala-cli-setup@68bd9c30954d20e6cb6ddaf01b3b38336f25df4b  # v1.10.1
         if: false
-      - uses: actions/setup-go@44694675825211faa026b3c33043df3e48a5fa00  # v6.0.0
+      - uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c  # v6.1.0
         if: false
       - uses: addnab/docker-run-action@4f65fabd2431ebc8d299f8e5a018d79a769ae185  # v3
         if: false