chore: sync model pricing from OpenRouter API

providers/moonshot.toml

@@ -53,8 +53,8 @@ display_name = "Kimi K2"
 tier = "frontier"
 context_window = 131072
 max_output_tokens = 16384
-input_cost_per_m = 0.44999999999999996
-output_cost_per_m = 2.2
+input_cost_per_m = 0.57
+output_cost_per_m = 2.3
 supports_tools = true
 supports_vision = true
 supports_streaming = true