scipp/scippnexus: v22.12.3

What's Changed Fix version getter code for docs by @SimonHeybrock in https://github.com/scipp/scippnexus/pull/86 Bump pypa/gh-action-pypi-publish from 1.6.1 to 1.6.4 by @dependabot in https://github.com/scipp/scippnexus/pull/87 Support loading fields of NXdata or NXdetector with no signal by @SimonHeybrock in https://github.com/scipp/scippnexus/pull/88 Full Changelog: https://github.com/scipp/scippnexus/compare/22.12.2...22.12.