[CI] Increase FE timezones tests timeout (#29356)

.github/workflows/frontend.yml

@@ -100,7 +100,7 @@ jobs:
     needs: files-changed
     if: github.event.pull_request.draft == false && needs.files-changed.outputs.frontend_all == 'true'
     runs-on: ubuntu-22.04
-    timeout-minutes: 14
+    timeout-minutes: 20
     steps:
     - uses: actions/checkout@v3
     - name: Prepare front-end environment