Random unit test failures on CI

[friederbluemle]

Azure CI occasionally fails on macOS, which can usually be "fixed" by rerunning the tests.

Ref:
https://dev.azure.com/ElectrodeNative/Electrode%20Native/_build/results?buildId=6353&view=logs&j=195f2670-0934-542b-f708-55083700808e&t=aee57a02-7e04-5dc7-01bc-f6a4fd498e68&s=befc156f-4349-50a1-7733-e1f49ac39682

  1) ModuleFactory
       getModuleInstance
         should create the cache directory if it does not exist [remote registry package]:
     Error: ENOENT: no such file or directory, open '/Users/runner/work/1/s/ern-core/test/ModuleFactoryCache/package.json'

followed by:

  1) AndroidRunnerGenerator
       should generate simple-android-runner fixture given same configuration:
     Error: Timeout of 5000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/Users/runner/work/1/s/ern-runner-gen-android/test/AndroidRunnerGenerator-test.ts)

Edit: A similar error also appears on GitHub Actions CI:

https://github.com/electrode-io/electrode-native/runs/4376269267?check_suite_focus=true

  1) CauldronHelper.js
       addYarnLock
         should add the yarn lock:
     Error: EINVAL: invalid argument, read
  

  2) CauldronHelper.js
       getYarnLock
         should return the yarn lock if found for key:
     AggregateError: EBADF: bad file descriptor, read
      at FSReqCallback.readFileAfterClose [as oncomplete] (node:internal/fs/read_file_context:52:21)

[+ 7 more errors]