Bump django from 3.0.4 to 3.0.5 (#450)

Bumps [django](https://github.com/django/django) from 3.0.4 to 3.0.5.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.0.4...3.0.5)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

requirements/dev.txt

@@ -2,4 +2,4 @@
 -r test.txt
 pypandoc==1.4
 twine==3.1.1
-django==3.0.4
+django==3.0.5