Downgrade ts version to fix pow issue

Author: risenW

danfojs-browser/package.json

@@ -21,7 +21,7 @@
     "types"
   ],
   "dependencies": {
-    "@tensorflow/tfjs": "3.9.0",
+    "@tensorflow/tfjs": "3.6.1",
     "mathjs": "9.4.4",
     "papaparse": "^5.3.1",
     "request": "^2.88.2",