fix, chore, refactor(egen): hardcodes scikit-learn version to 1.2, changes python version from 3.9 to 3.10, adds numpy==1.26.4 installation, adds code to undeploy model from endpoints

fix, chore, refactor(egen): hardcodes scikit-learn version to 1.2, changes python version from 3.9 to 3.10, adds numpy==1.26.4 installation, adds code to undeploy model from endpoints #8852