fix: no Optional when min_py is not higher than 3.10 (#804)

Co-authored-by: Zhang Fengping <[email protected]>

Author: fpzhang928

template/src/{{ module_name }}/settings.py.jinja

@@ -20,7 +20,14 @@ class GlobalSettings(BaseSettings):
 class Settings(BaseSettings):
     """Project specific settings."""
 
+    [%- if not version_higher_than(min_py, "3.10") %]
+
     logging_level: Optional[str] = getLevelName(logging.INFO)
+
+    [%- else %]
+
+    logging_level: str | None = getLevelName(logging.INFO)
+    [%- endif %]
     """Default logging level for the project."""
 
     model_config = SettingsConfigDict(