Bump django from 2.1.3 to 2.2.10

Bumps [django](https://github.com/django/django) from 2.1.3 to 2.2.10.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.1.3...2.2.10)

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ certifi==2018.11.29
 chardet==3.0.4
 coreapi==2.3.3
 coreschema==0.0.4
-Django==2.1.11
+Django==2.2.10
 django-cors-headers==2.4.0
 django-environ==0.4.5
 django-filter==2.0.0