chore(deps): bump docker/build-push-action from 2 to 4 (#89)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2 to 4.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v2...v4)

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

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Author: dependabot[bot]

.github/workflows/CD.yml

@@ -47,7 +47,7 @@ jobs:
           images: ${{ matrix.image }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v4
         with:
           context: .
           file: docker/${{ matrix.dockerfile }}