As f9bfe785ee already did for a regular test, replace `python` with
`python3` in the only `pummel` test spawning it so that it can be run on
platforms that don't provide a `python` binary anymore, like modern
macOS or some Linux distributions (e.g. Fedora) without specifying a
`PYTHON` env var.
PR-URL: https://github.com/nodejs/node/pull/53057
Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
