Bump django from 3.1.12 to 3.1.13 (#13)

Bumps [django](https://github.com/django/django) from 3.1.12 to 3.1.13.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@3.1.12...3.1.13)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -14,7 +14,7 @@ Click==7.0
 decorator==4.4.1
 dj-database-url==0.5.0
 dj-static==0.0.6
-Django==3.1.12
+Django==3.1.13
 django-livereload-server==0.3.2
 entrypoints==0.3
 Faker==4.0.0