chore(package): update copy-webpack-plugin to version 5.1.1

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
   "devDependencies": {
     "autoprefixer": "9.7.3",
     "clean-webpack-plugin": "3.0.0",
-    "copy-webpack-plugin": "5.1.0",
+    "copy-webpack-plugin": "5.1.1",
     "cross-env": "6.0.3",
     "css-loader": "3.3.0",
     "file-loader": "5.0.2",