chore: now that django-stubs is unpinned, upgrade it to latest

requirements/edx/development.txt

@@ -72,6 +72,7 @@ asgiref==3.8.1
     #   django
     #   django-cors-headers
     #   django-countries
+    #   django-stubs
 asn1crypto==1.5.1
     # via
     #   -r requirements/edx/doc.txt
@@ -575,9 +576,8 @@ django-storages==1.14.3
     #   -r requirements/edx/doc.txt
     #   -r requirements/edx/testing.txt
     #   edxval
-django-stubs==1.16.0
+django-stubs==5.0.1
     # via
-    #   -c requirements/edx/../constraints.txt
     #   -r requirements/edx/development.in
     #   djangorestframework-stubs
 django-stubs-ext==5.0.0
@@ -623,9 +623,7 @@ djangorestframework==3.14.0
     #   ora2
     #   super-csv
 djangorestframework-stubs==3.14.0
-    # via
-    #   -c requirements/edx/../constraints.txt
-    #   -r requirements/edx/development.in
+    # via requirements/edx/development.in
 djangorestframework-xml==2.0.0
     # via
     #   -r requirements/edx/doc.txt
@@ -1246,7 +1244,6 @@ multidict==6.0.5
 mypy==1.10.0
     # via
     #   -r requirements/edx/development.in
-    #   django-stubs
     #   djangorestframework-stubs
 mypy-extensions==1.0.0
     # via mypy
@@ -2079,8 +2076,6 @@ typer==0.12.3
     # via
     #   -r requirements/edx/testing.txt
     #   fastapi-cli
-types-pytz==2024.1.0.20240417
-    # via django-stubs
 types-pyyaml==6.0.12.20240311
     # via
     #   django-stubs