fix broken `googleanalytics` module calls

All of our functions within `kitsune/sumo/googleanalytics.py` started failing about a week ago with insufficient scope errors:
```
google.api_core.exceptions.PermissionDenied: 403 Request had insufficient authentication scopes.
```

https://mozilla.sentry.io/share/issue/45acb384484c4874a4f158b84256985d/