Chore(deps): Bump postcss-preset-env from 6.5.0 to 6.7.0

Bumps [postcss-preset-env](https://github.com/csstools/postcss-preset-env) from 6.5.0 to 6.7.0.
- [Release notes](https://github.com/csstools/postcss-preset-env/releases)
- [Changelog](https://github.com/csstools/postcss-preset-env/blob/main/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-preset-env/commits)

---
updated-dependencies:
- dependency-name: postcss-preset-env
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>