Merge pull request #55 from PatrickBaus/dependabot/github_actions/docker/build-push-action-6

[gha] Bump docker/build-push-action from 5 to 6

Author: PatrickBaus

.github/workflows/ci.yml

@@ -116,7 +116,7 @@ jobs:
       # https://github.com/docker/build-push-action
       - name: Build and push Docker image by digest
         id: build
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: ${{ matrix.platform }}