build: python3 support for configure

PR-URL: https://github.com/nodejs/node/pull/30047


Reviewed-By: Christian Clauss <cclauss@me.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>