What's Changed
* refactor: move more code to existing permissions sql by michalc in https://github.com/uktrade/pg-sync-roles/pull/69
* refactor: move existing permissions into sql by michalc in https://github.com/uktrade/pg-sync-roles/pull/70
* feat: little bit of race condition avoidance, especially when creating schemas by michalc in https://github.com/uktrade/pg-sync-roles/pull/71
**Full Changelog**: https://github.com/uktrade/pg-sync-roles/compare/v0.0.20...v0.0.21