chore(deps): bump @types/bun to ^1.3.14

typescript is already at the latest (6.0.3). `bun outdated` now reports
nothing outdated. Typecheck and tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: PIsberg

bun.lock

@@ -9,7 +9,7 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "@types/bun": "^1.1.14",
+    "@types/bun": "^1.3.14",
     "typescript": "~6.0.3"
   }
 }