bugfix + nugetupgrade

What's Changed

• Bump NUnit from 4.0.1 to 4.1.0 by @dependabot in #25
• Bump coverlet.collector from 6.0.0 to 6.0.1 by @dependabot in #26
• V1.5.1 by @kbilsted in #30

Full Changelog: 1.5.0.0...1.5.1