Revert "use git-access-token" (#650)

Author: stuqdog

.github/workflows/tag_and_release_protos.yml

@@ -67,7 +67,7 @@ jobs:
       - name: Notify Proto Watchers
         uses: peter-evans/repository-dispatch@v2
         with:
-          token: ${{ secrets.GIT_ACCESS_TOKEN }}
+          token: ${{ secrets.REPO_READ_TOKEN }}
           repository: ${{ matrix.repo }}
           event-type: protos-updated
           client-payload: '{"repo_name": "${{github.repository}}", "sha": "${{github.sha}}", "tag": "${{needs.bump-tag.outputs.new_tag}}"}'