Bump docker/build-push-action from 3 to 4 (#230)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-and-publish-to-docker.yml

@@ -60,7 +60,7 @@ jobs:
           }
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           platforms: linux/amd64,linux/arm64,linux/arm/v7

.github/workflows/run-tests-on-change.yml

@@ -17,7 +17,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Build the Docker image and execute the testsuite
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           push: false