Update @types/selenium-webdriver dependency

[pittgoose]

Fixes issue #3879 (#3879)
Updating @types/selenium-webdriver dependency to @types/[email protected] which added back the protractor.Key.chord method.

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[pittgoose]

I signed it!

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CLAs look good, thanks!

[googlebot]

CLAs look good, thanks!

[sjelin]

LGTM but @cnishina is the type expert