Bump TUnit from 1.2.11 to 1.3.15#23

dependabot[bot] wants to merge 1 commit intomainOSLC/oslc-rm-strictdoc-dotnet:mainfrom

dependabot/nuget/src/StrictDocOslcRmServer/StrictDocOslcRm.Tests/TUnit-1.3.15OSLC/oslc-rm-strictdoc-dotnet:dependabot/nuget/src/StrictDocOslcRmServer/StrictDocOslcRm.Tests/TUnit-1.3.15Copy head branch name to clipboard