GUACAMOLE-926: Fix invalid group identifier error message and upgrade yaml npm dependency.

guacamole/src/main/frontend/package.json

@@ -18,7 +18,7 @@
         "jquery": "^3.6.4",
         "jstz": "^2.1.1",
         "lodash": "^4.17.21",
-        "yaml": "^2.2.1"
+        "yaml": "^2.2.2"
     },
     "devDependencies": {
         "@babel/core": "^7.20.12",