Update dependency browserslist to ^4.8.6

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
browserslist	devDependencies	minor	^4.8.6	source

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Release Notes

browserslist/browserslist

v4.8.6

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• Fix Unknown version 10 of op_mob error in mobileToDesktop option.

v4.8.5

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• Fix last N browsers again after new caniuse-db API changes.

v4.8.4

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• Fix released versions detection for queries like last N browsers.
• Add IE 11 Mobile to dead browsers.

v4.8.3

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• Fix warning message (by Anton Ivanov).

v4.8.2

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• Fix Cannot convert undefined or null to object (by Antoine Clausse).
• Fix mobileToDesktop in defaults (by Huáng Jùnliàng).

v4.8.1

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• Fix Chrome and mobileToDesktop (by Huáng Jùnliàng).

v4.8.0

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v4.7.3

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• Add funding link for npm fund.

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