Update dependency copyfiles to v2.3.0

Author: renovate-bot

package.json

@@ -60,7 +60,7 @@
     "babel-eslint": "10.1.0",
     "babel-jest": "24.9.0",
     "babel-loader": "8.1.0",
-    "copyfiles": "2.2.0",
+    "copyfiles": "2.3.0",
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.11.0",
     "eslint-plugin-jest": "23.11.0",