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] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 certifi==2018.4.16
 chardet==3.0.4
-Django==2.0.12
+Django==2.2.10
 django-rest-framework-mongoengine==3.3.1
 djangorestframework==3.9.1
 idna==2.7