Docs: Fix docs sync actions (#29551)

.github/workflows/publish.yml

@@ -24,7 +24,7 @@ jobs:
       uses: actions/setup-node@v1
       id: generate-docs
       with:
-        node-version: '12'
+        node-version: '14'
     - run: yarn install --pure-lockfile --no-progress
     - run: ./scripts/ci-reference-docs-build.sh
     - name: publish-to-git
@@ -41,4 +41,4 @@ jobs:
     - shell: bash
       run: |
         test -n "${{ steps.publish.outputs.commit_hash }}"
-        test -n "${{ steps.publish.outputs.working_directory }}"
\ No newline at end of file
+        test -n "${{ steps.publish.outputs.working_directory }}"