Update dependency flake8 to v7

renovate[bot] · web-flow · commit 11f77d5c6b19 · 2024-06-27T00:22:01.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -5,7 +5,7 @@ django-oauth-toolkit==2.3.0
 django-phonenumber-field==7.3.0
 Django==4.2.11
 djangorestframework==3.15.2
-flake8==6.0.0
+flake8==7.1.0
 gunicorn==20.1.0
 icalendar==5.0.11
 ipython==8.22.2
