Remove gitpython requirement

requirements.txt

@@ -9,7 +9,6 @@ django-rq==2.7.0
 djangorestframework==3.12.4
 djangorestframework-simplejwt==5.2.2
 drf-spectacular==0.18.2
-gitpython==3.1.27
 python-gitlab==3.14.0
 python-memcached==1.59
 pytz==2023.3