Use Docker image for Windows builds

Author: shahmishal

.github/workflows/pull_request.yml

@@ -11,7 +11,6 @@ jobs:
     with:
       linux_exclude_swift_versions: '[{"swift_version": "5.9"}, {"swift_version": "5.10"}]'
       windows_exclude_swift_versions: '[{"swift_version": "5.9"}]'
-      enable_windows_docker: false
 
   soundness:
     name: Soundness