GUACAMOLE-773: Automatically generate dependencies for NPM modules.

guacamole/src/main/frontend/package.json

@@ -27,6 +27,7 @@
         "css-loader": "^5.2.4",
         "css-minimizer-webpack-plugin": "^1.3.0",
         "exports-loader": "^1.1.1",
+        "find-package-json": "^1.2.0",
         "google-closure-compiler": "^20210302.0.0",
         "html-webpack-plugin": "^4.5.2",
         "mini-css-extract-plugin": "^1.5.0",