std::format for MacOS ARM

Author: howetuft

.github/workflows/wheels.yml

@@ -181,10 +181,10 @@ jobs:
         run: |
           if [[ '${{ runner.arch }}' == 'X64' ]]; then
             echo "PKG_ARCH=x86_64" >> $GITHUB_ENV
-            xcode-select /Applications/Xcode_16.2.app
+            xcode-select -switch /Applications/Xcode_16.2.app
           else
             echo "PKG_ARCH=armv8" >> $GITHUB_ENV
-            xcode-select /Applications/Xcode_15.2.app
+            xcode-select -switch /Applications/Xcode_15.2.app
           fi
 
           #echo "CC=clang" >> "$GITHUB_ENV"