Backport PR #42419 on branch 1.3.x (CI: update vm image version for Azure)
Backport PR #42419: CI: update vm image version for Azure
macOS py37_macos timed out. restarted to check environment setup. some tests are expected to fail.  @simonjayhawkins is 3.7 not compat with this? (e.g. ok to not backport this as well). in the current build, env setup completed in 10m 53s. so will merge pending tests pass (apart from the URL fails)