Bump django from 3.0.8 to 3.1.14

Bumps [django](https://github.com/django/django) from 3.0.8 to 3.1.14.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.0.8...3.1.14)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,5 +1,5 @@
 asgiref==3.2.10
-Django==3.0.8
+Django==3.1.14
 pyactiveresource==2.2.1
 pytz==2020.1
 PyYAML==5.3.1