Fix OS setting of non-Linux wheel builds.

Author: scoder

.github/workflows/ci.yml

@@ -77,7 +77,7 @@ jobs:
           - "3.11"
           # - "3.12-dev"
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v3