Fix webdrivers on 7-0-stable branch for issue #48973.

[ruyrocha]

Motivation / Background

This Pull Request has been created because #48973

Detail

This Pull Request changes the requirement for webdrivers gem.

Additional information

Checklist

Before submitting the PR make sure the following are checked:

• This Pull Request is related to one change. Changes that are unrelated should be opened in separate PRs.
• Commit message has a detailed description of what changed and why. If this PR fixes a related issue include it in the commit message. Ex: [Fix #issue-number]
• Tests are added or updated if you fix a bug or add a feature.
• CHANGELOG files are updated for the changed libraries if there is a behavior change or additional feature. Minor bug fixes and documentation changes should not be included.

[rafaelfranca]

CI is broken. Can you take a look?

[ruyrocha]

@rafaelfranca right, I'm on it.

I have two local branches - one to run UJS tests with Karma, and another one to fix i18n errors - related to these changes:

  7-0-stable
  fix-i18n-helpers
* fix/ujs-tests-with-karma
  fix/webdrivers-on-7-0-stable
  main

Since the base branch for all of those are 7-0-stable, I'll submit new PRs when they're ready.

[ruyrocha]

It's green, @rafaelfranca.

Turns out that CI won't be happy without the changes on 42b4018.