Update postcss

Author: filiptronicek

package.json

@@ -48,7 +48,7 @@
         "eslint-plugin-react": "^7.33.2",
         "htmlnano": "2.0.3",
         "mocha": "^11.1.0",
-        "postcss": "^8.4.47",
+        "postcss": "^8.5.2",
         "prettier": "3.3.3",
         "puppeteer": "^23.6.0",
         "puppeteer-core": "^24.1.1",