Lots of small updates to validate ewkinos and sleptons.
What's Changed
* Bump actions/download-artifact from 2 to 3 by dependabot in https://github.com/scipp-atlas/mario-mapyde/pull/17
* Bump pypa/gh-action-pypi-publish from 1.5.0 to 1.5.1 by dependabot in https://github.com/scipp-atlas/mario-mapyde/pull/18
* ewkino workflow updates by mhance in https://github.com/scipp-atlas/mario-mapyde/pull/19
* Bump actions/upload-artifact from 2 to 3 by dependabot in https://github.com/scipp-atlas/mario-mapyde/pull/20
New Contributors
* mhance made their first contribution in https://github.com/scipp-atlas/mario-mapyde/pull/19
**Full Changelog**: https://github.com/scipp-atlas/mario-mapyde/compare/v0.2.3...v0.3.0