Update version of dj-database-url to enable support for cockroachdb #5781
Description
Is your feature request related to a problem?
Flagsmith currently doesn't work with CockroachDB. See cockroachdb/cockroach#31632 (comment)
Describe the solution you'd like.
Bump the current version of dj-database-url being used from 0.5.0 to a more recent version that enables CockroachDB support. Current version is 3.0.1: https://pypi.org/project/dj-database-url/
Describe alternatives you've considered
Don't upgrade and don't support CockroachDB well.
Additional context
No response