Bump django from 2.2.1 to 2.2.2 (#111)

Bumps [django](https://github.com/django/django) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.2.1...2.2.2)

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

requirements.txt

@@ -1,4 +1,4 @@
-Django==2.2.1
+Django==2.2.2
 python-dateutil==2.8.0
 requests==2.21.0
 django-el-pagination==3.2.4