Rapidpro-dash

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* Adjust old migrations to not use index_together
* Support django 5.1
* Change unique_together to use constraints, replace use of index_together
* Update deps

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* Order org admins on form

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* Merge pull request 193 from rapidpro/update-deps
* Update smartmin
* Update deps
* Merge pull request 190 from rapidpro/python3.12
* Update ci.yml
* Merge pull request 189 from rapidpro/dependabot/pip/urllib3-2.2.2
* Bump urllib3 from 2.2.1 to 2.2.2

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* Merge pull request 188 from rapidpro/dependabot/pip/requests-2.32.0
* Merge pull request 186 from rapidpro/dependabot/pip/tqdm-4.66.3
* Bump tqdm from 4.66.2 to 4.66.3
* --- updated-dependencies: - dependency-name: requests dependency-type: indirect ...
* Merge pull request 187 from rapidpro/update-CI-actions
* Update Github actions to latest versions

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* Merge pull request 185 from rapidpro/update-deps
* Update deps
* Merge pull request 184 from rapidpro/dependabot/pip/idna-3.7
* Merge pull request 183 from rapidpro/dependabot/pip/pillow-10.3.0
* Bump idna from 3.6 to 3.7
* Bump pillow from 10.2.0 to 10.3.0
* Merge pull request 182 from rapidpro/update-deps2
* Update to latest black, ruff, isort and djlint
* Merge pull request 178 from rapidpro/dependabot/pip/pillow-10.2.0
* Bump pillow from 10.1.0 to 10.2.0

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* Merge pull request 177 from rapidpro/django5
* Drop support for PG14
* Merge pull request 176 from rapidpro/prep-django5
* Update smartmin to 5.0.0
* Start testing on django 5.0
* Use datetime timezone aliased as tzone
* Remove use of deprecated pytz, self.assertEquals and index_together