Provide a maximum node version in package.json

As recommended here #1369 (comment), since the current build for this extension does not work with Node v18 #1373, it would be good to set a maximum node version until this gets addressed.

So we're updating `engines` here to allow for a maximum version, which in this case is v17.0.0.

Author: elenatanasoiu

extensions/ql-vscode/package-lock.json

@@ -14,7 +14,7 @@
   },
   "engines": {
     "vscode": "^1.59.0",
-    "node": ">=16.11.25",
+    "node": "^16.13.0",
     "npm": ">=7.20.6"
   },
   "categories": [