Bump Python requirement torchvision to 0.21.0

dan/datasets/entities/extract.py

@@ -18,6 +18,8 @@ def run(database: Path, output_file: Path) -> None:
     entities = list(
         map(itemgetter(0), EntityType.select(EntityType.name).distinct().tuples())
     )
+
+    output_file.parent.mkdir(exist_ok=True, parents=True)
     output_file.write_text(
         yaml.safe_dump({"entities": entities}, explicit_start=True, allow_unicode=True)
     )