chore(deps): update dependency tsdown to ^0.18.4 (#149)

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

Author: renovate[bot]

package.json

@@ -61,7 +61,7 @@
     "oxfmt": "^0.21.0",
     "oxlint": "^1.36.0",
     "oxlint-tsgolint": "^0.10.0",
-    "tsdown": "^0.18.3",
+    "tsdown": "^0.18.4",
     "typedoc": "^0.28.15",
     "typescript": "5.9.3",
     "vitest": "^4.0.16"