ci: bump docker/build-push-action from 6.15.0 to 6.16.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.15.0 to 6.16.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.15.0...v6.16.0)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: 6.16.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -111,7 +111,7 @@ jobs:
             core.setOutput("tags", tags);
 
       - name: Push Docker image
-        uses: docker/build-push-action@v6.15.0
+        uses: docker/build-push-action@v6.16.0
         id: docker_build_and_push
         env:
           DOCKER_BUILD_CHECKS_ANNOTATIONS: "false"