Merge pull request #121 from codecov/dependabot/pip/backend/django-4.2.21

chore(deps): bump django from 4.2.20 to 4.2.21 in /backend

Author: thomasrockhu-codecov

backend/requirements.txt

@@ -4,7 +4,7 @@ backcall==0.1.0
 certifi==2024.7.4
 chardet==3.0.4
 decorator==4.3.0
-Django==4.2.20
+Django==4.2.21
 django-environ==0.4.5
 django-extensions==2.2.3
 django-redis==4.9.0