chore(deps): update dependency gitdb to v4.0.12

Author: renovate[bot]

requirements.txt

@@ -8,7 +8,7 @@ asgiref==3.5.2
     # via django
 django==4.2.16
     # via django-migration-fixer (setup.py)
-gitdb==4.0.10
+gitdb==4.0.12
     # via gitpython
 gitpython==3.1.41
     # via django-migration-fixer (setup.py)