Bump postcss from 8.4.20 to 8.4.32

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.20 to 8.4.32.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.20...8.4.32)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -27,7 +27,7 @@
     "laravel-echo": "^1.14.2",
     "laravel-mix": "^6.0.49",
     "lodash": "^4.17.20",
-    "postcss": "^8.4.16",
+    "postcss": "^8.4.32",
     "postcss-advanced-variables": "^3.0.1",
     "postcss-cli": "^10.1.0",
     "postcss-css-variables": "^0.18.0",