chore(deps): bump mysqlclient from 2.2.0 to 2.2.4

Bumps [mysqlclient](https://github.com/PyMySQL/mysqlclient) from 2.2.0 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@v2.2.0...v2.2.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

Pipfile

@@ -23,7 +23,7 @@ httplib2 = "==0.22.0"
 idna = "==3.4"
 importlib-metadata = "==6.8.0"
 lxml = "==4.9.3"
-mysqlclient = "==2.2.3"
+mysqlclient = "==2.2.4"
 oauth2 = "==1.9.0.post1"
 oauthlib = "==3.2.2"
 pycparser = "==2.21"