chore(deps): update dependency postcss to v8.3.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss (source)	8.3.5 -> 8.3.6

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Release Notes

postcss/postcss

### [`v8.3.6`](https://togithub.com/postcss/postcss/blob/master/CHANGELOG.md#​836) [Compare Source](https://togithub.com/postcss/postcss/compare/8.3.5...8.3.6) - Fixed column in `missed semicolon` error (by [@​Gusted](https://togithub.com/Gusted)).

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Configuration

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