ci(tests): Switch to dotnet due to error

NUnit.Engine.NUnitEngineException : The NUnit 3 driver encountered an error while executing reflected code

Author: r-dh

appveyor.yml

@@ -19,13 +19,13 @@ skip_commits:
 before_build:
   - nuget restore
   - nuget install OpenCover -OutputDirectory packages -Version 4.6.519
-  
+
 build:
   project: Maria.sln
   verbosity: minimal
 
 test_script:
-  - .\packages\OpenCover.4.6.519\tools\OpenCover.Console.exe -returntargetcode -register:user -target:"nunit3-console.exe" -targetargs:"Maria.Tests\bin\Release\netcoreapp3.1\Maria.Tests.dll" -output:"coverage.xml" -filter:"+[Maria*]* -[Maria.Tests*]* "
+  - .\packages\OpenCover.4.6.519\tools\OpenCover.Console.exe -returntargetcode -register:user -target:"dotnet.exe" -targetargs:"test Maria.Tests\bin\Release\netcoreapp3.1\Maria.Tests.dll" -output:"coverage.xml" -filter:"+[Maria*]* -[Maria.Tests*]* "
 
 
 after_test: