So that ./configure can suggest the necessary system packages for Sage's python3 SPKG to build with ssl.

(This ticket does not change the status of openssl as an optional package.)

Related:

• Upgrade: OpenSSL 3.0, make it a standard package #29555: Upgrade: OpenSSL 3.0, make it a standard package

CC: @mwageringel @dimpase @orlitzky @slel

Component: build: configure

Author: Matthias Koeppe

Branch/Commit: 4c332c0

Reviewer: Dima Pasechnik, Markus Wageringel

Issue created by migration from https://trac.sagemath.org/ticket/30557