fix: upgrade tsdown from 0.15.12 to 0.16.1

Snyk has created this PR to upgrade tsdown from 0.15.12 to 0.16.1.

See this package in npm:
tsdown

See this project in Snyk:
https://app.snyk.io/org/dargon789/project/8da85645-409e-46fa-bd46-9b58e7905fb8?utm_source=github-cloud-app&utm_medium=referral&page=upgrade-pr

Author: snyk-io[bot]

npm/package.json

@@ -10,7 +10,7 @@
     "clean": "rm -rf bin dist && rm -rf ./@foundry-rs/forge*/bin ./@foundry-rs/forge*/dist ./@foundry-rs/forge*/*.tgz"
   },
   "dependencies": {
-    "tsdown": "^0.15.1",
+    "tsdown": "^0.16.1",
     "typescript": "^5.9.2",
     "@types/bun": "^1.2.22",
     "@types/node": "^24.4.0"