chore: attach mongoMemoryServer to db and destroy in tests (#5326)

* chore: attach mongoMemoryServer to db and destroy in tests

* bump mongodb-memory-server to 9.x

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Co-authored-by: Paul Popus <paul@nouance.io>

test/create-payload-app/int.spec.ts

@@ -10,6 +10,7 @@ import { fileURLToPath } from 'url'
 import { promisify } from 'util'
 
 import { initNext } from '../../packages/create-payload-app/src/lib/init-next.js'
+
 const filename = fileURLToPath(import.meta.url)
 const dirname = path.dirname(filename)