Update dependency vitest to v3

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
     "@types/node": "20.17.30",
     "tsup": "8.4.0",
     "typescript": "5.8.3",
-    "vitest": "2.1.9"
+    "vitest": "3.1.1"
   },
   "engines": {
     "node": "20.19.0"