Bump django from 2.2.21 to 2.2.27

Bumps [django](https://github.com/django/django) from 2.2.21 to 2.2.27.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@2.2.21...2.2.27)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 django-cors-headers==3.2.0
 dj-database-url==0.5.0
-Django==2.2.21
+Django==2.2.27
 django-extensions==2.2.5
 python-decouple==3.3
 pytz==2019.3