Update build deps

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
 		"nano-staged": "0.9.0",
 		"oxfmt": "0.40.0",
 		"simple-git-hooks": "2.13.1",
-		"tsdown": "0.21.2",
+		"tsdown": "0.21.8",
 		"valibot": "1.2.0",
 		"vitest": "4.1.0",
 		"xior": "0.8.3"