Fix locale issue #10014

[vozzen]

Summary

Fixes #10004.

As described in this comment, jest fails while running at machines with some non-English locales, like Turkish.

This PR uses new camelcase version that offers a locale option to use while converting case, which makes default locale irrelevant; hence eliminates the problem.

Changes:

• Upgrade camelcase version for jest-validate workspace.
• Call camelcase function providing en-US as locale while validating CLI options.

Test plan

Problem reproducible at machines using some certain locale. Following execution is on a Turkish locale machine:

D:\src\jest-test  (jest-test@1.0.0)
λ
node D:\src\jest\packages\jest-cli\bin\jest.js
● Unrecognized CLI Parameters:

  Following options were not recognized:
  ["run-in-band", "test-location-in-results"]

  CLI Options Documentation:
  https://jestjs.io/docs/en/cli.html

And this is test output with development version with fix:

D:\src\jest-test  (jest-test@1.0.0)
λ node D:\src\jest\packages\jest-cli\bin\jest.js
 PASS  __tests__/dummy.js
  Dummy test
    √ should pass (67 ms)

  console.info
    LANG: undefined

      at Object.info (__tests__/dummy.js:3:15)

Test Suites: 1 passed, 1 total
Tests:       1 passed, 1 total
Snapshots:   0 total
Time:        2.914 s, estimated 4 s
Ran all test suites.

[SimenB]

Thanks!

[github-actions]

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