Update prisma to 5.1.1

[yyosifov]

Updated from v4 to v5 (4.9.0 to 5.1.1)

• @prisma/client/runtime - has been deprecated.
• rejectOnNotFound - has been deprecated. It should be replaced with findFirstOrThrow.
• Fixed the tests' expectations/mocks to accommodate the rejectOnNotFound replacement.
• $on('beforeExit') - has been removed from the engine. The nest's app.enableShutdownHooks should be sufficient. More information here: this.$on("beforeExit") doesn't work anymore on 5.0.0 prisma/prisma#20171 (comment) and this.$on("beforeExit") doesn't work anymore on 5.0.0 prisma/prisma#20171 (comment)

Closes #507

NOTE: I had to run these commands locally to have campaign data. I thought I have run these before, so I'm unsure if there is some difference between the versions (v4 vs v5).

yarn prisma migrate deploy
yarn prisma generate
yarn prisma db seed

[github-actions]

✅ Tests will run for this PR. Once they succeed it can be merged.

[igoychev]

this is ready to merge, just waiting for another big commit with lots of logical changes to go in first

[yyosifov]

@igoychev sure. Let's hope nothing breaking goes in before the merge :)