try lowing min python version for macos wheels. try build for 10.14.

Author: electronstudio

.github/workflows/build.yml

@@ -18,8 +18,6 @@ jobs:
     strategy:
       matrix:
         python-version: [ '3.7', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9' ]
-    env:
-      MACOSX_DEPLOYMENT_TARGET: 10.14
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2