Use g++15 for intel mac

Author: mmcgr

sh/setup/install_macos_deps.sh

@@ -9,13 +9,13 @@ set -x
 
 # Install requirements of MAC OS X
 brew install bison libtool mcpp libffi swig
-brew install gcc@12
-brew link gcc@12
+brew install gcc@15
+brew link gcc@15
 
 echo "/usr/local/opt/bison/bin:$PATH" >> $GITHUB_PATH
 echo 'PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig/"' >> $GITHUB_ENV 
-echo 'CC=gcc-12' >> $GITHUB_ENV
-echo 'CXX=g++-12' >> $GITHUB_ENV
+echo 'CC=gcc-15' >> $GITHUB_ENV
+echo 'CXX=g++-15' >> $GITHUB_ENV
 
 set +e
 set +x