chore(deps): bump docker/build-push-action from 4.0.0 to 4.2.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.0.0 to 4.2.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4.0.0...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] <support@github.com>

.github/workflows/docker.yml

@@ -30,12 +30,12 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Build the container image
-        uses: docker/build-push-action@v4.0.0
+        uses: docker/build-push-action@v4.2.1
         with:
           repository: golang-repo-template
 
       - name: Push to GitHub Packages
-        uses: docker/build-push-action@v4.0.0
+        uses: docker/build-push-action@v4.2.1
         if: github.event_name == 'release' || github.event_name == 'push'
         with:
           username: ${{ github.actor }}
@@ -66,7 +66,7 @@ jobs:
         if: |
           (github.event_name == 'release' || github.event_name == 'push') &&
           contains(steps.check_dockerhub_credentials.outputs.missingsecrets, 'no')
-        uses: docker/build-push-action@v4.0.0
+        uses: docker/build-push-action@v4.2.1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}