Use logger.getLogger() instead of direct instantiation

See
[LOG001](https://docs.astral.sh/ruff/rules/direct-logger-instantiation/).

dandiapi/zarr/models.py

@@ -16,7 +16,7 @@
 if TYPE_CHECKING:
     from pathlib import Path
 
-logger = logging.Logger(name=__name__)
+logger = logging.getLogger(name=__name__)
 
 
 # The status of the zarr ingestion (checksums, size, file count)