Update docker/build-push-action action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -55,7 +55,7 @@ jobs:
         if: github.event_name == 'release'
       - name: Build and push
         id: build-and-push
-        uses: docker/build-push-action@v5.1.0
+        uses: docker/build-push-action@v6.19.2
         with:
           context: "."
           file: "./Containerfile"