build(action): bump docker/build-push-action in the actions group

Bumps the actions group with 1 update: [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `docker/build-push-action` from 6.8.0 to 6.9.0
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.8.0...v6.9.0)

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

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

action.yml

@@ -40,7 +40,7 @@ runs:
 
     - name: Build image
       id: docker-build
-      uses: docker/build-push-action@v6.8.0
+      uses: docker/build-push-action@v6.9.0
       with:
         builder: ${{ steps.buildx.outputs.name }}
         context: .