build: ensure non-gil wheels are not made for free threaded

Author: henryborchers

Jenkinsfile

@@ -1190,7 +1190,7 @@ pipeline {
                                                 "${newStageName}": {
                                                     if(selectedArches.contains(arch)){
                                                         stage(newStageName){
-                                                            node("mac && python${pythonVersion} && ${arch}"){
+                                                            node("mac && python3 && ${arch}"){
                                                                 checkout scm
                                                                 unstash 'sdist'
                                                                 findFiles(glob: 'dist/*.tar.gz').each{