Revert "update win build image"

This reverts commit 33faa46.

Author: adlk

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
               out/latest-linux.yml
 
           - platform: windows
-            os: windows-2022
+            os: windows-2019
             artifactPath: |
               out/*.exe
               out/latest.yml