sagemathgh-36823: `ipython` 8.18 and related upgrades, remove `backcall`
    
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Upgrading ipython to latest. This is a small upgrade done as a follow-up
of [sagemath#36129](sagemath#36129), which allows
us to drop the `backcall` package. https://ipython.readthedocs.io/en/sta
ble/whatsnew/version8.html#ipython-8-18-and-8-18-1

The upgrade of pexpect to 4.9 and tornado to 6.4.0 add support for
Python 3.12. https://github.com/pexpect/pexpect/releases/tag/4.9,
https://www.tornadoweb.org/en/stable/releases/v6.4.0.html




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URL: sagemath#36823
Reported by: Matthias Köppe
Reviewer(s): John H. Palmieri