Merge pull request #179 from GoogleContainerTools/release-workflow

chore: update release workflow

.github/workflows/prepare-release.yml

@@ -50,11 +50,7 @@ jobs:
  uses: repo-sync/[email protected]
  id: create-pr
  with:
- # Use a personal token to file a PR to trigger other workflows (e.g., unit tests).
- # Save your access token as GA_RELEASE_PR_PERSONAL_TOKEN. 
- # https://docs.github.com/en/actions/reference/events-that-trigger-workflows#triggering-new-workflows-using-a-personal-access-token
- # https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets
- github_token: ${{ secrets.GA_RELEASE_PR_PERSONAL_TOKEN }}
+ github_token: ${{ secrets.CLOUD_JAVA_BOT_GITHUB_TOKEN }}
  source_branch: ${{ github.event.inputs.jib_extension }}-release-v${{ github.event.inputs.release_version }}
  pr_title: "${{ github.event.inputs.jib_extension }} release v${{ github.event.inputs.release_version }}"
  pr_body: "To be merged after the release is complete."