Bump django from 1.11.29 to 2.2.25 (#31)

Bumps [django](https://github.com/django/django) from 1.11.29 to 2.2.25.
- [Release notes](https://github.com/django/django/releases)
- [Commits](django/django@1.11.29...2.2.25)

---
updated-dependencies:
- dependency-name: django
  dependency-type: indirect
...

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

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

Author: dependabot[bot]