Bump django from 3.0.12 to 3.1.14

Bumps [django](https://github.com/django/django) from 3.0.12 to 3.1.14.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.0.12...3.1.14)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -9,7 +9,7 @@ celery==5.1.2
 certifi==2019.11.28
 chardet==3.0.4
 dj-database-url==0.5.0
-Django==3.0.12
+Django==3.1.14
 django-annoying==0.9.0
 django-celery-beat==2.2.0
 django-celery-results==2.2.0