Update dependency optimize-css-assets-webpack-plugin to v6.0.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
optimize-css-assets-webpack-plugin	6.0.0 -> 6.0.1

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Release Notes

NMFR/optimize-css-assets-webpack-plugin

### [`v6.0.1`](https://togithub.com/NMFR/optimize-css-assets-webpack-plugin/compare/v6.0.0...v6.0.1) [Compare Source](https://togithub.com/NMFR/optimize-css-assets-webpack-plugin/compare/v6.0.0...v6.0.1)

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Configuration

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