chore(deps): update devdependency tsdown to v0.16.1

Author: renovate[bot]

package.json

@@ -45,7 +45,7 @@
     "eslint": "9.39.1",
     "lint-staged": "16.2.6",
     "simple-git-hooks": "2.13.1",
-    "tsdown": "0.15.12",
+    "tsdown": "0.16.1",
     "typescript": "5.9.3",
     "unstorage": "1.17.2",
     "vite": "7.2.2",