Update dependency autoprefixer to v10.3.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
autoprefixer	10.2.6 -> 10.3.1

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Release Notes

postcss/autoprefixer

### [`v10.3.1`](https://togithub.com/postcss/autoprefixer/blob/master/CHANGELOG.md#​1031) [Compare Source](https://togithub.com/postcss/autoprefixer/compare/10.3.0...10.3.1) - Fixed adding wrong prefixes to `content` (by Luke Warlow). ### [`v10.3.0`](https://togithub.com/postcss/autoprefixer/releases/10.3.0) [Compare Source](https://togithub.com/postcss/autoprefixer/compare/10.2.6...10.3.0) In Autoprefixer 10.3 [@​lukewarlow](https://togithub.com/lukewarlow) added `::file-selector-button` support. ```css ::-webkit-file-upload-button { border: 2px solid #​6c5ce7; padding: .2em .4em; border-radius: .2em; background-color: #a29bfe; } ::file-selector-button { border: 2px solid #​6c5ce7; padding: .2em .4em; border-radius: .2em; background-color: #a29bfe; } ```

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Configuration

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🚦 Automerge: Enabled.

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