only build once on macOS

lonvia · lonvia · commit 8cfdad3976f8 · 2021-08-10T10:47:30.000+02:00
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         # os: [ubuntu-18.04, windows-latest, macos-latest] # skip windows 
-        os: [ubuntu-20.04, macos-10.15, macos-11]
+        os: [ubuntu-20.04, macos-11]
 
     steps:
       - uses: actions/checkout@v2
