Chore: Update postcss to v8.5.2 [skip netlify]

Author: renovate[bot]

package-lock.json

@@ -72,7 +72,7 @@
     "eslint-plugin-vue": "9.1.1",
     "husky": "4.3.8",
     "lint-staged": "13.0.3",
-    "postcss": "8.4.14",
+    "postcss": "8.5.2",
     "postcss-html": "1.4.1",
     "prettier": "2.7.1",
     "prettier-plugin-packagejson": "2.2.18",