Bump django from 2.2.10 to 2.2.13 (kanishka-linux#49)

Bumps [django](https://github.com/django/django) from 2.2.10 to 2.2.13.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.2.10...2.2.13)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -8,7 +8,7 @@ bs4==0.0.1
 celery==4.2.1
 chardet==3.0.4
 cssselect==1.0.3
-Django==2.2.10
+Django==2.2.13
 django-widget-tweaks==1.4.2
 djangorestframework==3.10.2
 gunicorn==19.9.0