Bump postcss to 8.4.45

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss (source)	8.4.42 -> 8.4.45

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Release Notes

postcss/postcss (postcss)

### [`v8.4.45`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8445) [Compare Source](https://redirect.github.com/postcss/postcss/compare/8.4.44...8.4.45) - Removed unnecessary fix which could lead to infinite loop. ### [`v8.4.44`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8444) [Compare Source](https://redirect.github.com/postcss/postcss/compare/8.4.43...8.4.44) - Another way to fix `markClean is not a function` error. ### [`v8.4.43`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8443) [Compare Source](https://redirect.github.com/postcss/postcss/compare/8.4.42...8.4.43) - Fixed `markClean is not a function` error.

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