Container should be optional

Author: d3vzer0

src/openhound_github/models/workflow_job.py

@@ -51,7 +51,7 @@ class GHWorkflowJobProperties(GHNodeProperties):
     job_key: str | None = None
     runs_on: Any = None
     is_self_hosted: bool = False
-    container: str = None
+    container: str | None = None
     environment: str | None = None
     permissions: list[str] | None = None
     uses_reusable: str | None = None