Remove dependency on the webdrivers gem

[jarednorman]

Summary

The webdrivers gem no longer works with recent versions of Chrome. Recent versions of selenium-webdriver (newer than 4.11) achieve the same effect.

One caveat with this change: it implicitly requires Ruby 3 as that's the requirement for selenium-webdriver 4.11+.

Checklist

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[mergify[bot]]

It looks like this PR is missing a label to determine the type of change it introduces. The maintainer should add one of the following labels:

• bug for bugfixes.
• enhancement for new features and improvements.
• documentation for documentation changes.
• security for security patches.
• removed for feature removals.
• infrastructure for internal changes that should not go in the changelog.

Additionally, the maintainer may also want to add one of the following:

• breaking for breaking changes.
• deprecated for feature deprecations.

Once the correct labels have been set, simply remove the needs changelog label label from this PR so I can merge it.

[benjaminwil]

@jarednorman If you rebase this against main the solidus-older CI job should be okay now.

[jarednorman]

Thanks, done.