Bump docker/build-push-action from 4.2.0 to 4.2.1 (#1042)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v4.2.0...v4.2.1)

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

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

.github/workflows/docker.yml

@@ -32,7 +32,7 @@ jobs:
           images: ghcr.io/${{ github.repository }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v4.2.0
+        uses: docker/build-push-action@v4.2.1
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}