ci: Update opensource.contentauth.org doc schemas on new release (#1521)

Co-authored-by: Eric Scouten <[email protected]>

Author: ok-nick

.github/workflows/update-schemas.yml

@@ -12,7 +12,14 @@ jobs:
   repository-dispatch:
     runs-on: ubuntu-latest
     steps:
-      - name: Send repository dispatch
+      - name: Send repository dispatch to contentauth/opensource.contentauth.org
+        uses: peter-evans/repository-dispatch@v4
+        with:
+          event-type: c2pa-rs-release
+          repository: contentauth/json-manifest-reference
+          token: ${{ secrets.TRIGGER_JSON_MANIFEST_UPDATE }}
+
+      - name: Send repository dispatch to contentauth/json-manifest-reference
         uses: peter-evans/repository-dispatch@v4
         with:
           event-type: c2pa-rs-release