Add missing parameter (#228)

- *Category*: bugfix
- *JIRA issue*: [MIC-3471](https://jira.ihme.washington.edu/browse/MIC-3471)

Adds a missing parameter, somehow removed (perhaps during a merge?)

Testing
Ran `simulate run` with fix, simulation carried on beyond the bug.

src/vivarium/interface/cli.py

@@ -108,7 +108,7 @@ def run(
 
     start = time()
 
-    results_root = get_output_root(results_directory, model_specification)
+    results_root = get_output_root(results_directory, model_specification, artifact_path)
     # Update permissions mask (assign to variable to avoid printing previous value)
     _ = os.umask(0o002)
     results_root.mkdir(parents=True, exist_ok=False)