Fix Fedora system test (#5034)
Seems like the latest
[`fedora:41`](https://hub.docker.com/layers/library/fedora/rawhide/images/sha256-c037a87094660ceda037ee319b17f59559241d2a3580d1d0f414e72b0a8f3827?context=explore)
(pushed at Jul 12, 2024 at 22:05 UTC) docker image has removed the
`python3` package, causing our current [CI
failure](https://github.com/astral-sh/uv/actions/runs/9917708846/job/27401528178).
