Bump postcss from 8.4.25 to 8.4.31 (#2)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.25 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.25...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
...

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

packages/components/package.json

@@ -135,7 +135,7 @@
     "msw": "^1.3.1",
     "msw-storybook-addon": "^1.8.0",
     "npm-run-all": "^4.1.5",
-    "postcss": "8.4.25",
+    "postcss": "8.4.31",
     "postcss-lit": "1.0.1",
     "postcss-loader": "7.0.1",
     "postcss-nested": "^6.0.1",