fix: pytest plugin event-loop deprecation warning (#111)

Author: vicrep

fastapi_sqla/_pytest_plugin.py

@@ -160,7 +160,7 @@ def async_engine(async_sqlalchemy_url):
         return create_async_engine(async_sqlalchemy_url)
 
     @fixture
-    async def async_sqla_connection(async_engine, event_loop):
+    async def async_sqla_connection(async_engine):
         async with async_engine.connect() as connection:
             yield connection