chore(deps): update dependency postcss to v8.4.31 [security]

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
         "husky": "8.0.1",
         "less": "4.1.3",
         "lint-staged": "13.0.3",
-        "postcss": "8.4.18",
+        "postcss": "8.4.31",
         "prettier": "2.7.1",
         "rollup-plugin-polyfill-node": "0.10.2",
         "stream-browserify": "3.0.0",