Update docker/build-push-action action to v2.6.1

Author: renovate-bot

.github/workflows/ci.yaml

@@ -179,7 +179,7 @@ jobs:
           password: ${{ secrets.QUAY_TOKEN }}
 
       - name: Build and push
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: .
           file: ./Dockerfile