Bump docker/build-push-action from 4.0.0 to 6.13.0

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.0.0 to 6.13.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v6.13.0)

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

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

Author: dependabot[bot]

.github/workflows/docker-build-on-tag.yaml

@@ -60,7 +60,7 @@ jobs:
           password: ${{ secrets.DOCKER_REGISTRY_TOKEN }}
 
       - name: Build and push (classic)
-        uses: docker/build-push-action@v4.0.0
+        uses: docker/build-push-action@v6.13.0
         with:
           context: ./
           file: ./docker/classic/Dockerfile
@@ -73,7 +73,7 @@ jobs:
             SHAIRPORT_SYNC_BRANCH=${{ env.SHAIRPORT_SYNC_BRANCH }}
  
       - name: Build and push
-        uses: docker/build-push-action@v4.0.0
+        uses: docker/build-push-action@v6.13.0
         with:
           context: ./
           file: ./docker/Dockerfile