Bump the all-dependencies group with 3 updates

Bumps the all-dependencies group with 3 updates: [@mdn/browser-compat-data](https://github.com/mdn/browser-compat-data), [postcss](https://github.com/postcss/postcss) and [postcss-preset-env](https://github.com/csstools/postcss-plugins/tree/HEAD/plugin-packs/postcss-preset-env).


Updates `@mdn/browser-compat-data` from 5.5.34 to 5.5.35
- [Release notes](https://github.com/mdn/browser-compat-data/releases)
- [Changelog](https://github.com/mdn/browser-compat-data/blob/main/RELEASE_NOTES.md)
- [Commits](mdn/browser-compat-data@v5.5.34...v5.5.35)

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)

Updates `postcss-preset-env` from 9.5.14 to 9.5.15
- [Changelog](https://github.com/csstools/postcss-plugins/blob/main/plugin-packs/postcss-preset-env/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-plugins/commits/HEAD/plugin-packs/postcss-preset-env)

---
updated-dependencies:
- dependency-name: "@mdn/browser-compat-data"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: postcss-preset-env
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
...

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