Test CI

.github/workflows/main.yml

@@ -52,8 +52,15 @@ jobs:
     - name: Install macOS dependencies
       if: runner.os == 'macOS'
       run: |
+        #export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
         brew update
-        brew upgrade
+        # Only run "brew upgrade" on macOS 13 or higher because on macOS 12
+        # the command will fail because brew cannot upgrade xcbeautify. I
+        # assume this is because there is no Bottle (binary package) for
+        # xcbeautify on macOS 12 and rebuilding xcbeautify
+        #if [ "`sw_vers -productVersion | cut -d '.' -f 1`" != "12" ]; then
+        #  brew upgrade
+        #fi
         brew install -q \
           googletest \
           jpeg-turbo \