deps(actions): bump actions/setup-go from 5 to 6

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 5 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci-pr-checks.yaml

@@ -20,7 +20,7 @@ jobs:
         run: sed -En 's/^go (.*)$/GO_VERSION=\1/p' go.mod >> $GITHUB_ENV
 
       - name: Set up Go with cache
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: "${{ env.GO_VERSION }}"
           cache-dependency-path: ./go.sum