Relax type of get_route_name argument to HttpConnection

All information required is already provided by the HttpConnection class, which Request is a subclass of. Changing this to HttpConnection allows also passing a WebSocket instead

src/prometheus_fastapi_instrumentator/routing.py

@@ -39,7 +39,7 @@
 
 from typing import List, Optional
 
-from starlette.requests import Request
+from starlette.requests import HttpConnection
 from starlette.routing import Match, Mount, Route
 from starlette.types import Scope
 
@@ -66,7 +66,7 @@ def _get_route_name(
     return None
 
 
-def get_route_name(request: Request) -> Optional[str]:
+def get_route_name(request: HttpConnection) -> Optional[str]:
     """Gets route name for given request taking mounts into account."""
 
     app = request.app