follow the nim modelcard change context length to 131072

https://build.nvidia.com/z-ai/glm-5.1/modelcard
Other Properties Related to Input: Supports multi-turn conversations, tool calling, system prompts, and extended agentic sessions. Input context length: 131,072 tokens.

Author: WJQSERVER

providers/nvidia/models/z-ai/glm-5.1.toml

@@ -17,7 +17,7 @@ input = 0.0
 output = 0.0
 
 [limit]
-context = 202752
+context = 131072
 output = 131072
 
 [modalities]