Update workflow test to new settings api

Author: emesare

rust/tests/workflow.rs

@@ -57,7 +57,7 @@ fn test_workflow_registration(_session: &Session) {
         .iter()
         .find(|w| w.name() == test_workflow.name())
         .expect("Workflow not found in list");
-    Settings::new("")
+    Settings::new()
         .get_property_string_list("analysis.workflows.functionWorkflow", "enum")
         .iter()
         .find(|&w| w == "test_workflow")