Bump postcss from 8.4.21 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 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@8.4.21...8.4.31)

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

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

Author: dependabot[bot]

package-lock.json

@@ -8,7 +8,7 @@
         "axios": "^1.1.2",
         "laravel-vite-plugin": "^0.7.2",
         "lodash": "^4.17.19",
-        "postcss": "^8.1.14",
+        "postcss": "^8.4.31",
         "vite": "^4.0.0"
     },
     "dependencies": {