chore(deps): update dependency tsdown to ^0.18.0

Author: renovate[bot]

package.json

@@ -40,7 +40,7 @@
 		"clerc": "workspace:*",
 		"eslint": "^9.39.1",
 		"prettier": "^3.7.3",
-		"tsdown": "^0.16.8",
+		"tsdown": "^0.18.0",
 		"typescript": "^5.9.3",
 		"vite": "^7.2.6",
 		"vitest": "^4.0.15",