chore(deps): update dependency tsdown to v0.15.12

Author: renovate[bot]

package.json

@@ -113,7 +113,7 @@
 		"prettier-plugin-sh": "0.17.4",
 		"release-it": "19.0.3",
 		"sentences-per-line": "0.3.0",
-		"tsdown": "0.12.7",
+		"tsdown": "0.15.12",
 		"typescript": "5.8.3",
 		"typescript-eslint": "8.35.0",
 		"vitest": "3.2.4"