CI: update macOS workflow

- Add Python 3.12 scripts to path (colcon is installed with Python 3.12).

Signed-off-by: Rhys Mainwaring <[email protected]>

.github/scripts/macos_build.sh

@@ -11,6 +11,6 @@ export PKG_CONFIG_PATH=${PKG_CONFIG_PATH}:/usr/local/opt/[email protected]/lib/pkgc
 export CMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}:/usr/local/opt/qt@5
 
 # Python scripts installed with: `pip3 install --user <package>`
-export PATH=$PATH:$HOME/Library/Python/3.11/bin
+export PATH=$PATH:$HOME/Library/Python/3.11/bin:$HOME/Library/Python/3.12/bin
 
 colcon build --symlink-install --merge-install --cmake-args -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_TESTING=ON -DCMAKE_CXX_STANDARD=17 -DCMAKE_MACOSX_RPATH=FALSE -DCMAKE_INSTALL_NAME_DIR=$(pwd)/install/lib