Update dependency postcss to v8.4.47

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss (source)	`8.4.45` -> `8.4.47`

Release Notes

postcss/postcss (postcss)

### [`v8.4.47`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8447) [Compare Source](https://redirect.github.com/postcss/postcss/compare/8.4.46...8.4.47) - Removed debug code. ### [`v8.4.46`](https://redirect.github.com/postcss/postcss/blob/HEAD/CHANGELOG.md#8446) [Compare Source](https://redirect.github.com/postcss/postcss/compare/8.4.45...8.4.46) - Fixed `Cannot read properties of undefined (reading 'before')`.

Configuration

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spinrock / nextjs-template

Update dependency postcss to v8.4.47 #1249

Release Notes

Configuration

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