replace the --global-option command with --config-settings since --global-option has been removed in pip 25.3

[julian9499]

What does this PR do?

This PR aims to fix the bootstrap-salt.sh script for linux based operating systems that install the newest pip version. The removal of the option --global-option causes the script to fail. The removal is discussed in this PR:

As well as in the changelog of pip:pypa/pip#11859

What issues does this PR fix or reference?

pypa/pip#11859.

Previous Behavior

INFO -- saltstack-ubuntu: �[1;32m *  INFO�[0m: Installing Built Salt Wheel
INFO -- saltstack-ubuntu: 
INFO -- saltstack-ubuntu: Usage:   
INFO -- saltstack-ubuntu:   pip3.10 install [options] <requirement specifier> [package-index-options] ...
INFO -- saltstack-ubuntu:   pip3.10 install [options] -r <requirements file> [package-index-options] ...
INFO -- saltstack-ubuntu:   pip3.10 install [options] [-e] <vcs project url> ...
INFO -- saltstack-ubuntu:   pip3.10 install [options] [-e] <local project path> ...
INFO -- saltstack-ubuntu:   pip3.10 install [options] <archive url/path> ...
INFO -- saltstack-ubuntu: 
INFO -- saltstack-ubuntu: no such option: --global-option
INFO -- saltstack-ubuntu: �[1;31m * ERROR�[0m: Failed to run install_ubuntu_git()!!!

New Behavior

INFO -- saltstack-ubuntu: �[1;32m *  INFO�[0m: Running install_ubuntu_git()
INFO -- saltstack-ubuntu: �[1;32m *  INFO�[0m: Installing salt using python3, Python 3.10.12

As shown the new behaviour allows the script to continue and allowed my salt-kitchen stack to run again