fix(ci): restore auth for docs gh-pages deploy (apache#625)

Co-authored-by: Kevin Liu <kevinjqliu@users.noreply.github.com>

Author: wgtmac

.github/workflows/docs.yml

@@ -63,9 +63,12 @@ jobs:
 
       - name: Deploy to gh-pages
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
         run: |
           git config --global user.name 'GitHub Actions'
           git config --global user.email 'actions@github.com'
+          git remote set-url origin "https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
 
           git checkout --orphan gh-pages-tmp
           git rm --quiet -rf .