temporary disable macos in CI

Author: iskyd

.github/workflows/CI.yml

@@ -11,7 +11,7 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, windows-latest]
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v2