Pass host as str again

as the cypher proc expects a string

Author: FlorentinD

graphdatascience/query_runner/session_query_runner.py

@@ -269,6 +269,6 @@ def _inject_arrow_config(self, params: dict[str, Any]) -> None:
             token = "IGNORED"
 
         params["host"] = connection_info.host
-        params["port"] = connection_info.port
+        params["port"] = str(connection_info.port)
         params["token"] = token
         params["encrypted"] = connection_info.encrypted