chore(deps): update dependency postcss-loader to v8.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-loader	8.1.0 -> 8.1.1

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Release Notes

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

### [`v8.1.1`](https://togithub.com/webpack-contrib/postcss-loader/blob/HEAD/CHANGELOG.md#811-2024-02-28) [Compare Source](https://togithub.com/webpack-contrib/postcss-loader/compare/v8.1.0...v8.1.1)

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Configuration

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.48%. Comparing base (3955273) to head (d3c690f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2148 +/- ## ======================================= Coverage 95.48% 95.48% ======================================= Files 18 18 Lines 1461 1461 ======================================= Hits 1395 1395 Misses 66 66 ```

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