Bump serialize-javascript and css-minimizer-webpack-plugin

Bumps [serialize-javascript](https://github.com/yahoo/serialize-javascript) to 7.0.5 and updates ancestor dependency [css-minimizer-webpack-plugin](https://github.com/webpack/css-minimizer-webpack-plugin). These dependencies need to be updated together.


Updates `serialize-javascript` from 6.0.2 to 7.0.5
- [Release notes](https://github.com/yahoo/serialize-javascript/releases)
- [Commits](yahoo/serialize-javascript@v6.0.2...v7.0.5)

Updates `css-minimizer-webpack-plugin` from 3.4.1 to 8.0.0
- [Release notes](https://github.com/webpack/css-minimizer-webpack-plugin/releases)
- [Changelog](https://github.com/webpack/css-minimizer-webpack-plugin/blob/main/CHANGELOG.md)
- [Commits](webpack/css-minimizer-webpack-plugin@v3.4.1...v8.0.0)

---
updated-dependencies:
- dependency-name: css-minimizer-webpack-plugin
  dependency-version: 8.0.0
  dependency-type: direct:development
- dependency-name: serialize-javascript
  dependency-version: 7.0.5
  dependency-type: indirect
...

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Author: dependabot[bot]