fix: correct incorrect type annotation

src/bentoml/_internal/ray/__init__.py

@@ -4,6 +4,7 @@
 from functools import partial
 
 from ray.serve._private.http_util import ASGIHTTPSender
+from starlette.requests import Request
 
 import bentoml
 from bentoml import Tag
@@ -22,9 +23,6 @@
         """'ray[serve]' is required in order to use module 'bentoml.ray', install with 'pip install -U "ray[serve]"'. See https://docs.ray.io/ for more information.""",
     )
 
-if t.TYPE_CHECKING:
-    import requests
-
 
 def _get_runner_deployment(
     svc: bentoml.Service,
@@ -95,7 +93,7 @@ def __init__(self, **runner_deployments: dict[str, Deployment]):
                 assert runner.name in runner_deployments
                 runner._set_handle(RayRunnerHandle, runner_deployments[runner.name])
 
-        async def __call__(self, request: requests.Request):
+        async def __call__(self, request: Request):
             sender = ASGIHTTPSender()
             await self.app(request.scope, receive=request.receive, send=sender)
             return sender.build_asgi_response()