chore(deps): update dependency tsdown to ^0.18.3 (#466)

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

Author: renovate[bot]

package.json

@@ -63,7 +63,7 @@
     "neostandard": "^0.12.2",
     "simple-git-hooks": "^2.13.1",
     "size-limit": "^12.0.0",
-    "tsdown": "^0.18.2",
+    "tsdown": "^0.18.3",
     "typedoc": "^0.28.15",
     "typescript": "~5.9.3",
     "vitest": "^4.0.16"