Pin ONNX version (#637)

Author: toubatbrian

package.json

@@ -2,6 +2,12 @@
   "name": "@livekit/agents-monorepo",
   "private": true,
   "type": "module",
+  "pnpm": {
+    "overrides": {
+      "onnxruntime-node": "1.21.0",
+      "onnxruntime-common": "1.21.0"
+    }
+  },
   "scripts": {
     "build": "turbo run build",
     "clean": "turbo run clean",