chore(deps): upgrade django-stubs to fix mypy linter

source: python/mypy#17958 (comment)

Author: juliendauliac

pdm.lock

@@ -17,7 +17,7 @@ dependencies = [
     "django-filter>=23.4",
     "django-oauth2-authcodeflow>=1.0.1",
     "django-redis>=5.4.0",
-    "django-stubs-ext~=4.2.5",
+    "django-stubs-ext~=5.1.1",
     "django-taggit>=5.0.1",
     "django-widget-tweaks>=1.5.0",
     "djangorestframework>=3.14.0",
@@ -222,7 +222,7 @@ docs = [
 ]
 
 types = [
-    "django-stubs~=4.2.6",
+    "django-stubs~=5.1.1",
     "djangorestframework-stubs>=3.14.4",
     "django-filter-stubs>=0.1.3",
     "types-python-dateutil>=2.8.19.14",