Update deepspeed.json

ptuning/deepspeed.json

@@ -10,6 +10,15 @@
     "hysteresis": 2,
     "min_loss_scale": 1
   },
+  "optimizer": {
+    "type": "AdamW",
+    "params": {
+        "lr": "auto",
+        "betas": "auto",
+        "eps": "auto",
+        "weight_decay": "auto"
+    }
+  },
   "zero_optimization": {
     "stage": 3,
     "offload_optimizer": {