future annotations for fastapi

Author: samuelcolvin

instrumentation/opentelemetry-instrumentation-fastapi/src/opentelemetry/instrumentation/fastapi/__init__.py

@@ -175,6 +175,9 @@ def client_response_hook(span: Span, message: dict):
 API
 ---
 """
+
+from __future__ import annotations
+
 import logging
 import typing
 from typing import Collection