chore(deps-dev): bump postcss from 8.4.29 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.29 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@8.4.29...8.4.31)

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

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

package.json

@@ -149,7 +149,7 @@
     "husky": "^8.0.1",
     "nodemon": "^3.0.0",
     "open-cli": "^7.1.0",
-    "postcss": "^8.4.17",
+    "postcss": "^8.4.31",
     "prettier": "^3.0.0",
     "sass": "^1.66.1",
     "sleep-ms": "^2.0.1",