chore(deps): update dependency postcss-loader to v7.3.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-loader	7.3.2 -> 7.3.4

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Release Notes

webpack-contrib/postcss-loader (postcss-loader)

### [`v7.3.4`](https://togithub.com/webpack-contrib/postcss-loader/blob/HEAD/CHANGELOG.md#734-2023-12-27) [Compare Source](https://togithub.com/webpack-contrib/postcss-loader/compare/v7.3.3...v7.3.4) ### [`v7.3.3`](https://togithub.com/webpack-contrib/postcss-loader/blob/HEAD/CHANGELOG.md#733-2023-06-10) [Compare Source](https://togithub.com/webpack-contrib/postcss-loader/compare/v7.3.2...v7.3.3)

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Configuration

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