Add PyPy 3.10

[hroncok]

This is a placeholder issue to add PyPy 3.10 to the container once available in Fedora 37.

Progress:

• PR merged https://src.fedoraproject.org/rpms/pypy3.10/pull-request/8
• pypy3.10 built in f37 https://koji.fedoraproject.org/koji/taskinfo?taskID=105120661
• bodhi update created https://bodhi.fedoraproject.org/updates/FEDORA-2023-1b78796ec4
• bodhi update reaches stable
• pypy3.10 available on the f37 mirrors
• pypy3.10 added to https://github.com/fedora-python/fedora-python-tox/blob/master/Dockerfile