Update dependency postcss-cli to v11

Author: renovate[bot]

package.json

@@ -3,7 +3,7 @@
   "devDependencies": {
     "autoprefixer": "^10.3.6",
     "postcss": "^8.3.8",
-    "postcss-cli": "^9.0.1",
+    "postcss-cli": "^11.0.0",
     "postcss-elm-tailwind": "^0.11.0",
     "tailwindcss": "^2.2.16"
   },