build(deps): Bump docker/build-push-action from 6.2.0 to 6.9.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.2.0 to 6.9.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@1556069...4f58ea7)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/caddy.yaml

@@ -37,7 +37,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and Push image
-        uses: docker/build-push-action@15560696de535e4014efeff63c48f16952e52dd1 # v6.2.0
+        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
         id: push
         env:
           # ref; https://docs.docker.com/build/ci/github-actions/reproducible-builds/