Update dependency postcss-cli to v8.3.0

Author: renovate-bot

package-lock.json

@@ -8,7 +8,7 @@
   },
   "devDependencies": {
     "jest": "26.6.3",
-    "postcss-cli": "8.2.0",
+    "postcss-cli": "8.3.0",
     "postcss-reporter": "6.0.1",
     "stylelint": "13.7.2",
     "stylelint-config-standard": "20.0.0",