Powershell Core, not Powershell.

tillig · tillig · commit 3007c113f2a0 · 2020-10-05T16:18:17.000-07:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -23,7 +23,7 @@ clone_depth: 1
 test: off
 
 build_script:
-- ps: .\build.ps1
+- pwsh: .\build.ps1
 
 artifacts:
 - path: artifacts\packages\**\*.nupkg
