chore(deps): update docker/build-push-action action to v6 (#611)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -69,7 +69,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Build Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true