Add complexity noqa comment to openai._map_user_prompt

Adding CachePoint handling pushed method complexity over the limit (16 > 15).
Added noqa: C901 to suppress the complexity warning.

Author: ronakrm

pydantic_ai_slim/pydantic_ai/models/openai.py

@@ -1602,7 +1602,7 @@ def _map_json_schema(self, o: OutputObjectDefinition) -> responses.ResponseForma
         return response_format_param
 
     @staticmethod
-    async def _map_user_prompt(part: UserPromptPart) -> responses.EasyInputMessageParam:
+    async def _map_user_prompt(part: UserPromptPart) -> responses.EasyInputMessageParam:  # noqa: C901
         content: str | list[responses.ResponseInputContentParam]
         if isinstance(part.content, str):
             content = part.content