Bump docker/build-push-action from 3 to 4

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 3 to 4.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v3...v4)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/code.yml

@@ -179,7 +179,7 @@ jobs:
 
  - name: Push cached image to container registry
  if: github.ref_type == 'tag' # || github.ref_name == 'main'
- uses: docker/build-push-action@v3
+ uses: docker/build-push-action@v4
  # This does not build the image again, it will find the image in the 
  # Docker cache and publish it
  with: