Backport PR #47015 on branch 1.4.x (CI: Ensure no-use-pep517 with no-build-isolation with new pip version)
Backport PR #47015: CI: Ensure no-use-pep517 with no-build-isolation with new pip version
py38_32bit failing since this PR was opened before #47029 was merged. can ignore this and merge once other jobs are green.