chore(deps): update dependency browserslist to v4.21.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
browserslist	4.20.2 -> 4.21.4

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Release Notes

browserslist/browserslist

v4.21.4

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• Updated Firefox ESR.

v4.21.3

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• Improved unknown region and unknown feature error (by Alexander Chabin).

v4.21.2

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• Updated Firefox ESR.

v4.21.1

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• Fixed parsing days in since query.

v4.21.0

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v4.20.4

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• Fixed Opera in mobileToDesktop (by Pig Fang).

v4.20.3

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• Added Baidu to dead browsers (by Igor Lukanin).

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Configuration

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