fix(deps): update dependency postcss to v8.4.16

Author: renovate[bot]

package-lock.json

@@ -67,7 +67,7 @@
     "opentype.js": "1.3.4",
     "pino": "8.4.0",
     "points": "3.2.0",
-    "postcss": "8.4.14",
+    "postcss": "8.4.16",
     "react": "17.0.2",
     "react-dom": "17.0.2",
     "react-favicon": "1.0.1",