Bump djangorestframework in /budget_proj/requirements
Bump djangorestframework in /budget_proj/requirements

Bumps [djangorestframework](https://github.com/encode/django-rest-framework) from 3.5.4 to 3.11.2.
- [Release notes](https://github.com/encode/django-rest-framework/releases)
- [Commits](https://github.com/encode/django-rest-framework/compare/3.5.4...3.11.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
hackoregon/team-budget,hackoregon/team-budget,hackoregon/team-budget