chore(deps): update dependency vitest to v2

Author: renovate[bot]

package.json

@@ -43,7 +43,7 @@
     "ts-node": "10.9.2",
     "tsup": "7.2.0",
     "typescript": "5.6.3",
-    "vitest": "0.34.6"
+    "vitest": "2.1.4"
   },
   "peerDependencies": {
     "postcss": "^8.0.0"