Bump the npm-minor group across 1 directory with 2 updates

Bumps the npm-minor group with 2 updates in the / directory: [cssnano](https://github.com/cssnano/cssnano) and [postcss](https://github.com/postcss/postcss).


Updates `cssnano` from 7.0.2 to 7.0.3
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/cssnano@7.0.2...cssnano@7.0.3)

Updates `postcss` from 8.4.38 to 8.4.39
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.38...8.4.39)

---
updated-dependencies:
- dependency-name: cssnano
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-minor
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-minor
...

Signed-off-by: dependabot[bot] <support@github.com>