Merge pull request #179 from pytest-dev/altendky-patch-9

macos-12 until someone updates ci to support macos arm

Author: altendky

.github/workflows/ci.yml

@@ -77,7 +77,7 @@ jobs:
             runs-on: windows-latest
             python_platform: win32
           - name: 🍎
-            runs-on: macos-latest
+            runs-on: macos-12
             python_platform: darwin
         python:
           - name: CPython 2.7