Update dependency django-stubs to v1.16.0

Author: renovate[bot]

django-starter/Pipfile

@@ -25,7 +25,7 @@ pytest-xdist = "==2.3.0"
 django-extensions = "==3.1.3"
 django-debug-toolbar = "==3.2.2"
 django-silk = "==4.1.0"
-django-stubs = "==1.9.0"
+django-stubs = "==1.16.0"
 pylint-django = "==2.4.4"
 # Django - Testing
 pytest-django = "==4.4.0"