chore(deps): update dependency tsdown to ^0.12.6 (#70)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -78,7 +78,7 @@
     "eslint": "^9.28.0",
     "prettier": "^3.5.3",
     "rollup": "^4.41.1",
-    "tsdown": "^0.12.5",
+    "tsdown": "^0.12.6",
     "tsx": "^4.19.4",
     "typescript": "^5.8.3",
     "unplugin-oxc": "^0.4.5",