chore(deps): update dependency postcss to v8.5.2

Author: renovate[bot]

package.json

@@ -64,7 +64,7 @@
     "lint-staged": "13.0.3",
     "markdown-it": "13.0.1",
     "markdown-it-prism": "2.3.0",
-    "postcss": "8.4.17",
+    "postcss": "8.5.2",
     "postcss-html": "1.5.0",
     "postcss-import": "14.1.0",
     "postcss-nested": "5.0.6",