Bump postcss-loader from 5.2.0 to 5.3.0
Bump postcss-loader from 5.2.0 to 5.3.0

Bumps [postcss-loader](https://github.com/webpack-contrib/postcss-loader) from 5.2.0 to 5.3.0.
- [Release notes](https://github.com/webpack-contrib/postcss-loader/releases)
- [Changelog](https://github.com/webpack-contrib/postcss-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/postcss-loader/compare/v5.2.0...v5.3.0)

---
updated-dependencies:
- dependency-name: postcss-loader
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
20minutes/colette