build(node): Use npm in Volta

We are using `npm` in CI, update the Volta config to reflect this. Also, remove the `yarn.lock`, which is obsolete, and update `node` to a version compatible with `npm@11`

Author: szokeasaurusrex

package.json

@@ -62,8 +62,8 @@
     ]
   },
   "volta": {
-    "node": "20.10.0",
-    "yarn": "1.22.19"
+    "node": "24.8.0",
+    "npm": "11.6.0"
   },
   "overrides": {
     "browserslist": "<4.26.0 || >4.26.0"