fix(linter/plugins): pin tsdown dependency to 0.15.1 (#14005)

TSDown 0.15.2+ breaks building `oxlint`, once a new entry point is added (which #13945 does). rolldown/tsdown#503

Pin `tsdown` dependency to 0.15.1 to work around this until fixed in TSDown.

Author: overlookmotel

apps/oxlint/package.json

@@ -35,7 +35,7 @@
   ],
   "devDependencies": {
     "execa": "^9.6.0",
-    "tsdown": "^0.15.0",
+    "tsdown": "0.15.1",
     "typescript": "catalog:",
     "vitest": "catalog:"
   },