Bump postcss-cli from 7.1.1 to 7.1.2 (#31566)

Bump postcss-cli from 7.1.1 to 7.1.2 (#31566)

Bumps [postcss-cli](https://github.com/postcss/postcss-cli) from 7.1.1 to 7.1.2.
- [Release notes](https://github.com/postcss/postcss-cli/releases)
- [Changelog](https://github.com/postcss/postcss-cli/blob/master/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss-cli/compare/7.1.1...7.1.2)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>