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] <[email protected]>

Author: dependabot[bot]

.github/workflows/golang.yaml

@@ -48,7 +48,7 @@ jobs:
         GOLANG_VERSION=$( grep "GOLANG_VERSION ?=" versions.mk )
         echo "GOLANG_VERSION=${GOLANG_VERSION##GOLANG_VERSION ?= }" >> $GITHUB_ENV
     - name: Install Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: ${{ env.GOLANG_VERSION }}
     - name: Run tests