Bump actions/setup-go from 6 to 7 in the ci group (#1296)

Bumps the ci group with 1 update: [actions/setup-go](https://github.com/actions/setup-go).


Updates `actions/setup-go` from 6 to 7
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](https://github.com/actions/setup-go/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: ci
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docker-images.yml

@@ -54,7 +54,7 @@ jobs:
           sudo apt-get install podman buildah
 
       - name: Set up Go 1.26
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v7
         with:
           go-version: '1.26'
           cache: false  # true (default) results in warnings since we don't use Go modules