update license-webpack-plugin once more to get webpack into the license output

Author: silverwind

package-lock.json

@@ -28,7 +28,7 @@
     "jquery.are-you-sure": "1.9.0",
     "less": "4.0.0",
     "less-loader": "7.2.0",
-    "license-webpack-plugin": "2.3.8",
+    "license-webpack-plugin": "2.3.9",
     "mermaid": "8.8.4",
     "mini-css-extract-plugin": "1.3.3",
     "monaco-editor": "0.21.2",