LET-1383 [BE] Change tourism-and-recreation for sustainable-tourism

[yulia-bel]

This PR is BE part for replacing Tourism and recreation for Sustainable tourism (LET-1376) and includes following updates:

• Update category model and replace tourism-and-recreation with sustainable-tourism
• Migration file that will replace in existing data all the category values of tourism-and-recreation for sustainable-tourism (in tables projects, investors and project_developers)
• Update of the tests and snapshots accordingly
• Update of the swagger documentation

Testing instructions

Actual tests are updated and cover the implemented changes (since no new functionality has been introduced).
The results of running new Migration in local database:

before migration

after migration

Tracking

1383

[martintomas]

Looks good to me ;)

[agnessa]

looks good, just take into account that there are references to the old slug in the FE code. unless agreed otherwise, perhaps we could update the FE code as well not to break this?

[martintomas]

looks good, just take into account that there are references to the old slug in the FE code. unless agreed otherwise, perhaps we could update the FE code as well not to break this?

Good point, I hoped that they don't use it hardcoded anywhere 🤔 . From my point of view, it should be enough to just replace it everywhere on FE