Revert "change release workflow matrix for testing"

This reverts commit a121abb593b72d31352988c67732f6e0cdb8f26b.

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
 
         strategy:
             matrix:
-                os: [macos-latest]
+                os: [macos-latest, ubuntu-latest, windows-latest]
 
         steps:
             - name: Check out Git repository