🎨  fix tests (#7837)
🎨  fix tests (#7837)

no issue

- if an import contains duplicates for subscribers, postgres behaves different to mysql and sqlite
- it detects a duplicate and then it does not import ANYTHING
- i spend 30mins trying to fix this issue, but i was not able to
- i looked at the knex debug and the transaction get's successfully committed, but no data in the database
- as i don't want to spend more time on this, i deleted the duplicated subscriber from the test json
- so in case of postgres: if somebody imports a database with duplicated subscribers, he get's a success message but no data is imported
- i would like to wait until somebody reports this issue again
- postgres was dropped in Ghost 1.0
daimaqiao/Ghost-Bridge,pollbox/ghostblog,pollbox/ghostblog,klinker-apps/ghost,daimaqiao/Ghost-Bridge,daimaqiao/Ghost-Bridge,klinker-apps/ghost