drop macOS, due to slowness

Author: vszakats

.github/workflows/test.yml

@@ -150,9 +150,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Install shunit2
-        run: |
-          brew update
-          brew install shunit2
+        run: HOMEBREW_NO_AUTO_UPDATE=1 brew install shunit2
 
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2