Fix xcode-select

The old Xcode sticks around, so make sure we sort in reverse to pick the newer
version. Technically we should use something like sort -Vr, but -V doesn't exist
on macOS. But that won't be a problem until Xcode 100, which my great great
grand children can worry about.

Author: iluuu1994

.github/actions/macos-update-clang/action.yml

@@ -8,7 +8,7 @@ runs:
         label=$((softwareupdate -l 2>/dev/null | grep 'Label:' | grep -o 'Command Line Tools for Xcode.*' | head -1) || echo '')
         if [ -n "$label" ]; then
           softwareupdate -i "$label"
-          xcode_path=$(ls -1 '/Applications' | grep 'Xcode_.*\.app' | head -1)
+          xcode_path=$(ls -1 '/Applications' | grep 'Xcode_.*\.app' | sort -r | head -1)
           sudo xcode-select -s "/Applications/$xcode_path"
         else
           echo "Not found."