Update dependency selenium-webdriver to v4.19.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
selenium-webdriver (source, changelog)	4.18.1 -> 4.19.0

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Release Notes

SeleniumHQ/selenium (selenium-webdriver)

v4.19.0

Compare Source

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• Add CDP for Chrome 123 and remove 120
• Avoid over-escaping browser path (#​13632)
• Add full RBS support (#​13234)

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[mjankowski]

Along with merging this, we may want to review the chrome version setting that we had in place for the intermittent CI failures a while back (release notes here indicate chrome 123 CDP support).

[ClearlyClaire]

We use options.browser_version = '120' and the changelog says they've removed 120… yet the tests succeed. I'm not sure what this means. But we can try dropping that setting and see how it goes.

[renovate]

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[ClearlyClaire]

Removed the version specification, re-ran the tests a bunch of time, and ended up only seeing one error that seem consistent with the flaky tests we've been having without this PR. So I don't think there's any regression and this is good to merge.