add a migration script for the luminary url
add a migration script for the luminary url

- change the slug suffix from `personality_` to `luminary_` in personalities
collection
- update all the users' story_items that contain a luminary

Beit-Hatfutsot/dbs-back,Beit-Hatfutsot/dbs-back,Beit-Hatfutsot/dbs-back,Beit-Hatfutsot/dbs-back