Fix appveyor to be schema compliant

RehanSaeed · RehanSaeed · commit 543b9b006007 · 2023-09-14T11:44:10.000+01:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -38,7 +38,7 @@ build_script:
   - pwsh: dotnet cake --target=Test
   - pwsh: dotnet cake --target=Pack
 
-test: off
+test: false
 
 artifacts:
   - name: NuGet Packages
