Update dependency jsdom to ^15.2.1

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
jsdom	devDependencies	patch	^15.2.1	source

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Release Notes

jsdom/jsdom

v15.2.1

Compare Source

• Fixed JSDOM.fromURL() handling of URLs with hashes in them, to no longer send the hash to the server and append an extra copy of it when constructing the Document. (rchl)
• Fixed focusing an already-focused element to correctly do nothing, instead of firing additional focus events. (eps1lon)
• Fixed typo in the not-implemented message for mediaElement.addTextTrack(). (mtsmfm)
• Upgraded nwsapi minimum version to 2.2.0, which fixes issues with ::-webkit- prefixed pseudo-elements and namespaced attribute selectors.

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