textproc/py-docstring-to-markdown: Update to 0.17

• Fix test failures with importlib-metadata 8.7.0
• Fix reStructuredText edge cases to better support polars
• Use trusted publishing for package uploads

Changelog: https://github.com/python-lsp/docstring-to-markdown/compare/v0.16...v0.17

Reported by: portscout, Repology