Cleanup command fails to drop pglogical role due to privileges on view `pg_stat_statements`

**Describe the bug**
PgBelt fails to drop the pglogical role when running `belt teardown --full` with the following error:

```
ERROR: role "pglogical" cannot be dropped because some objects depend on it
DETAIL: privileges for view pg_stat_statements
```

**Expected behavior**
The teardown command runs without errors and doesn't stop in the middle.

**Additional context**
This happened with a Postgres 12 RDS database.