Download depth fix (#138)

* download argo fix

* back to ship datasets

Author: ammedd

src/virtualship/cli/commands.py

@@ -284,7 +284,7 @@ def fetch(path: str | Path, username: str | None, password: str | None) -> None:
                     maximum_latitude=spatial_range.maximum_latitude + 3.0,
                     start_datetime=start_datetime,
                     end_datetime=end_datetime,
-                    minimum_depth=abs(0),
+                    minimum_depth=abs(1),
                     maximum_depth=abs(spatial_range.maximum_depth),
                     output_filename=dataset["output_filename"],
                     output_directory=download_folder,