Test Arm64 Windows using released compiler

Until today, we only had nightlies to test against.

Author: SeanTAllen

.github/workflows/pr.yml

@@ -98,7 +98,7 @@ jobs:
         run: |
           Invoke-WebRequest https://dl.cloudsmith.io/public/ponylang/nightlies/raw/versions/latest/ponyc-arm64-pc-windows-msvc.zip -OutFile C:\ponyc.zip;
           Expand-Archive -Force -Path C:\ponyc.zip -DestinationPath C:\ponyc;
-          Invoke-WebRequest https://dl.cloudsmith.io/public/ponylang/nightlies/raw/versions/latest/corral-arm64-pc-windows-msvc.zip -OutFile C:\corral.zip;
+          Invoke-WebRequest https://dl.cloudsmith.io/public/ponylang/releases/raw/versions/latest/corral-arm64-pc-windows-msvc.zip -OutFile C:\corral.zip;
           Expand-Archive -Force -Path C:\corral.zip -DestinationPath C:\ponyc;
           $env:PATH = 'C:\ponyc\bin;' + $env:PATH;
           .\make.ps1 -Command test 2>&1;