Bump docker/build-push-action from 5 to 6 in the docker-actions group

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


Updates `docker/build-push-action` from 5 to 6
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...v6)

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

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

.github/workflows/docker.yml

@@ -37,7 +37,7 @@ jobs:
           username: hussainweb
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push Docker image for PHP ${{ matrix.php_version }}
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: ${{ env.DOCKERFILE_DIR }}/debian/
           push: ${{ github.event_name != 'pull_request' }}