get rid of typing.Any subclass

Author: DylanRussell

instrumentation-genai/opentelemetry-instrumentation-vertexai/src/opentelemetry/instrumentation/vertexai/utils.py

@@ -94,13 +94,13 @@ class TextPart:
 
 
 @dataclass()
-class InputMessage(Any):
+class InputMessage:
     role: str
     parts: list[MessagePart]
 
 
 @dataclass()
-class OutputMessage(Any):
+class OutputMessage:
     role: str
     parts: list[MessagePart]
     finish_reason: Union[str, FinishReason]