fix: add fusion fields to JobMissingFields

The dbt Cloud API added `is_fusion_ready_override` and `fusion_readiness`
to the job payload, causing the scheduled CI test to fail.

Author: b-per

src/dbt_jobs_as_code/schemas/job.py

@@ -278,6 +278,10 @@ class JobMissingFields(JobDefinition):
     # TODO: Add to JobDefinition model when the feature is out
     force_node_selection: Optional[bool] = True
 
+    # Fusion-related fields
+    is_fusion_ready_override: Optional[bool] = False
+    fusion_readiness: Optional[Any] = None
+
     # Unneeded read-only fields
     raw_dbt_version: Optional[str] = None
     created_at: str = ""