fix: use release app for Zoekt sync

Author: brendan-kellam

.github/workflows/syncZoekt.yml

@@ -33,8 +33,8 @@ jobs:
         id: app-token
         uses: actions/create-github-app-token@v2
         with:
-          app-id: ${{ secrets.SOURCEBOT_SYNC_APP_ID }}
-          private-key: ${{ secrets.SOURCEBOT_SYNC_APP_PRIVATE_KEY }}
+          app-id: ${{ secrets.RELEASE_APP_ID }}
+          private-key: ${{ secrets.RELEASE_APP_PRIVATE_KEY }}
           owner: sourcebot-dev
           repositories: sourcebot
           permission-contents: write