Convert to use munit-cats-effect

[jatcwang]

https://typelevel.org/munit-cats-effect/

We currently write a lot of unsafeRunSync in our test code which can be avoided with the above library

[mzuehlke]

Has this been done in scope of #2181 ?

[jatcwang]

@mzuehlke Only a few files have been converted so this isn't done yet

[mzuehlke]

Thanks