fix: validating async functions (#7894)

[ehmicky]

Summary

jest-validate distinguishes between sync and async functions, but it should not. Fixes #7894.

Test plan

const { validate } = require('jest-validate')
assert(validate({ name: async () => {} }, { exampleConfig: { name: () => {} } }).isValid)
assert(validate({ name: () => {} }, { exampleConfig: { name: async () => {} } }).isValid)
assert(validate({ name: async () => {} }, { exampleConfig: { name: async () => {} } }).isValid)
assert(validate({ name: () => {} }, { exampleConfig: { name: () => {} } }).isValid)

[codecov-io]

Codecov Report

Merging #7896 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #7896   +/-   ##
=======================================
  Coverage   58.15%   58.15%           
=======================================
  Files         173      173           
  Lines        6424     6424           
  Branches        5        6    +1     
=======================================
  Hits         3736     3736           
  Misses       2686     2686           
  Partials        2        2

Impacted Files	Coverage Δ
packages/jest-validate/src/condition.js	100% <ø> (ø)	⬆️

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[thymikee]

Thank you so much!

[github-actions]

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