Update dependency mysqlclient to v2.2.6

Author: renovate[bot]

requirements.txt

@@ -1,7 +1,7 @@
 asgiref==3.7.2 ; python_version >= "3.10" and python_version < "4.0"
 django-environ==0.11.2 ; python_version >= "3.10" and python_version < "4"
 django==5.0.1 ; python_version >= "3.10" and python_version < "4.0"
-mysqlclient==2.2.1 ; python_version >= "3.10" and python_version < "4.0"
+mysqlclient==2.2.6 ; python_version >= "3.10" and python_version < "4.0"
 python-dotenv==1.0.0 ; python_version >= "3.10" and python_version < "4.0"
 sqlparse==0.4.4 ; python_version >= "3.10" and python_version < "4.0"
 typing-extensions==4.9.0 ; python_version >= "3.10" and python_version < "3.11"