Bump docker/build-push-action from 6.13.0 to 6.15.0 (#40)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.13.0 to 6.15.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.13.0...v6.15.0)

---
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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
 
     - name: Push latest
       id: docker_build_latest
-      uses: docker/build-push-action@v6.13.0
+      uses: docker/build-push-action@v6.15.0
       with:
         builder: ${{ steps.buildx.outputs.name }}
         context: ./