chore(deps): pin dependency langium-cli to 2.1.0

Author: renovate[bot]

packages/language/package.json

@@ -51,7 +51,7 @@
     "@storm-software/testing-tools": "latest",
     "@storm-software/workspace-tools": "latest",
     "@types/node": "20.9.0",
-    "langium-cli": "^2.1.0"
+    "langium-cli": "2.1.0"
   },
   "publishConfig": {
     "access": "public"