Update dependency Django to v4

Author: renovate[bot]

pyproject.toml

@@ -69,7 +69,7 @@ typing_extensions = ">=3.7,<5.0"
 six = "^1.14"
 
 [tool.poetry.dev-dependencies]
-Django = {version = "^3.2.14"}
+Django = {version = "^4.0.0"}
 check-manifest = {version = "^0.48", python = "^3.6"}
 bump2version = {version = "^1.0.0", python = "^3.6"}
 git-changelog = {version = "^0.6.0", python = "^3.6.2"}