Consider Replacing Specflow with Reqnroll

[jonreding2010]

Specflow hasn't been updated in 2 years, it might be time to consider other BDD alternatives.
https://github.com/SpecFlowOSS/SpecFlow.

Reqnroll is a fork from specflow that could be an easy upgrade and have better longevity.
https://github.com/reqnroll/Reqnroll