chore(deps): bump mysqlclient from 2.1.1 to 2.2.4

Bumps [mysqlclient](https://github.com/PyMySQL/mysqlclient) from 2.1.1 to 2.2.4.
- [Release notes](https://github.com/PyMySQL/mysqlclient/releases)
- [Changelog](https://github.com/PyMySQL/mysqlclient/blob/main/HISTORY.rst)
- [Commits](PyMySQL/mysqlclient@v2.1.1...v2.2.4)

---
updated-dependencies:
- dependency-name: mysqlclient
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -2,7 +2,7 @@ requests
 logzero
 aiohttp-cors
 wheel
-mysqlclient == 2.1.1
+mysqlclient == 2.2.4
 sentry-sdk == 1.14.0
 celery == 5.4.0
 azure-storage-blob == 12.13.1