src: fix json utils escapes for U+000B PR-URL: https://github.com/nodejs/node/pull/43206 Fixes: https://github.com/nodejs/node/issues/43193 Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Michael Dawson <midawson@redhat.com> Reviewed-By: Minwoo Jung <nodecorelab@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>