Bump django from 2.0.12 to 2.2.10

Bumps [django](https://github.com/django/django) from 2.0.12 to 2.2.10.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.0.12...2.2.10)

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

requirements.txt

@@ -6,7 +6,7 @@ coveralls==1.2.0
 decorator==4.1.2
 dj-database-url==0.4.2
 dj-static==0.0.6
-Django==2.0.12
+Django==2.2.10
 django-debug-toolbar==1.9.1
 django-jenkins==0.110.0
 django-pylibmc==0.6.1