Bump django from 2.0.7 to 2.2.13

Bumps [django](https://github.com/django/django) from 2.0.7 to 2.2.13.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.0.7...2.2.13)

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 #Django==1.11.7
-Django==2.0.7
+Django==2.2.13
 psycopg2==2.7.3.1
 oauthlib==2.0.0
 requests==2.11.1