fix(models.py): Add default value to model

Now we need default value for every field.

Signed-off-by: Denys Fedoryshchenko <[email protected]>

Author: nuclearcat

kernelci/api/models.py

@@ -815,7 +815,8 @@ class EventHistory(DatabaseModel):
         default_factory=datetime.now
     )
     data: Dict[str, Any] = Field(
-        description='Event data'
+        description='Event data',
+        default={}
     )
 
     @classmethod