Update max_position_embeddings in model config to 4096

config.json

@@ -16,7 +16,7 @@
   "hidden_size": 3584,
   "initializer_range": 0.02,
   "intermediate_size": 14336,
-  "max_position_embeddings": 8192,
+  "max_position_embeddings": 4096,
   "model_type": "gemma2",
   "num_attention_heads": 16,
   "num_hidden_layers": 42,