chore(deps): update dependency bunchee to v6.4.0 (#22)

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
     "@arethetypeswrong/cli": "0.17.3",
     "@biomejs/biome": "1.9.4",
     "@changesets/cli": "2.27.12",
-    "bunchee": "6.3.3",
+    "bunchee": "6.4.0",
     "typescript": "5.7.3",
     "vitest": "3.0.5"
   },