Bump docker/build-push-action from 4.2.0 to 4.2.1

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](docker/build-push-action@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>

.github/workflows/build-linux-image.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Pull Latest Linux Base Image
         run: docker pull debian:stable-slim
       - name: Build Linux Image
-        uses: docker/build-push-action@v4.2.0
+        uses: docker/build-push-action@v4.2.1
         with:
           context: .
           file: ./linux.Dockerfile