Use union type for event_time, lookback, batch_size in config types

core/dbt/artifacts/resources/v1/config.py

@@ -8,7 +8,7 @@
 
 from dbt import hooks
 from dbt.artifacts.resources.base import Docs
-from dbt.artifacts.resources.types import ModelHookType
+from dbt.artifacts.resources.types import BatchSize, ModelHookType
 from dbt.artifacts.utils.validation import validate_color
 from dbt_common.contracts.config.base import BaseConfig, CompareBehavior, MergeBehavior
 from dbt_common.contracts.config.materialization import OnConfigurationChangeOption
@@ -81,8 +81,8 @@ class NodeConfig(NodeAndTestConfig):
     # 'mergebehavior' dictionary
     materialized: str = "view"
     incremental_strategy: Optional[str] = None
-    batch_size: Any = None
-    lookback: Any = 0
+    batch_size: Union[BatchSize, Any] = None
+    lookback: Union[int, Any] = 0
     begin: Union[datetime, Any] = None
     persist_docs: Dict[str, Any] = field(default_factory=dict)
     post_hook: List[Hook] = field(
@@ -126,7 +126,7 @@ class NodeConfig(NodeAndTestConfig):
         default_factory=ContractConfig,
         metadata=MergeBehavior.Update.meta(),
     )
-    event_time: Any = None
+    event_time: Union[str, Any] = None
 
     def __post_init__(self):
         # we validate that node_color has a suitable value to prevent dbt-docs from crashing