test: add lax coverage pragma to AttributeError catch in redis_client fixture

Author: Ar-maan05

tests/server/contrib/test_redis_event_store.py

@@ -38,7 +38,7 @@ async def redis_client():
     finally:
         try:
             await client.aclose()  # pragma: lax no cover
-        except AttributeError:
+        except AttributeError:  # pragma: lax no cover
             await client.close()  # pragma: lax no cover