ci: kick off update piplines when a binary build completes (#778)

Author: iameli

.github/workflows/build.yaml

@@ -164,3 +164,6 @@ jobs:
           path: ${{ steps.branch-manifest.outputs.manifest-file }}
           destination: "build.livepeer.live/${{ github.event.repository.name }}/"
           parent: false
+
+      - name: Notify new build upload
+        run: curl -X POST https://holy-bread-207a.livepeer.workers.dev