Add missing command

Author: rlazo

.github/workflows/private-mirror-sync.yml

@@ -22,8 +22,9 @@ jobs:
           fetch-depth: 0
           submodules: true
           token: ${{ secrets.GOOGLE_OSS_BOT_TOKEN }}
-          committer: google-oss-bot <[email protected]>
       - name: Force push HEAD to private repo main branch
         run: |
+          git config --local user.name google-oss-bot
+          git config --local user.email [email protected]
           git remote add mirror https://github.com/FirebasePrivate/firebase-android-sdk.git
           git push mirror HEAD:main --force --verbose