chore: 🍰 Add `--logHeapUsage` To Jest Test Call

Created by: Tirokk

🍰 Pullrequest

In backend tests add informations for memory usage and open handles / unsolved promises.

Issues

• fixes #5181 (closed)

Additional Informations

See https://stackoverflow.com/questions/62885390/my-jests-tests-are-leaking-memory-how-can-i-fix-this

Todo

• add --logHeapUsage to jest test call