fix gh actions build

Author: NellowTCS

Build/package.json

@@ -35,7 +35,8 @@
     "jszip": "^3.10.1",
     "prettier": "^3.5.3",
     "prettier-plugin-css-order": "^2.1.2",
-    "split.js": "^1.6.5"
+    "split.js": "^1.6.5",
+    "copy-webpack-plugin": "^13.0.0"
   },
   "devDependencies": {
     "@types/file-saver": "^2.0.7",