Bump docker/build-push-action from 4.1.1 to 4.2.1 (#1431)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.1.1 to 4.2.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4.1.1...v4.2.1)

---
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>

.github/workflows/publish-docker-image-ghcr.yml

@@ -42,7 +42,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: build and publish container
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           push: true
           file: Dockerfile-ghcr

.github/workflows/publish-profiling-petclinic-base.yml

@@ -21,7 +21,7 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: push to gh packages
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           push: true
           file: smoke-tests/profiling-base-petclinic/linux/Dockerfile