loader: Ensure CvsLoader max_content_size parameter is honored pyproject.toml: Bump minimal required Python version to 3.9 Apply swh-py-template v0.3.3 with copier
loader: Ensure CvsLoader max_content_size parameter is honored pyproject.toml: Bump minimal required Python version to 3.9 Apply swh-py-template v0.3.3 with copier