Update egui to latest master

[lucasmerlin]

I wanted to patch rerun to the latest egui master, egui_commonmark failed to compile, so here is the fix! I'll convert this to the actual egui update once egui 0.32 is out.

[xangelix]

@lucasmerlin just a small heads up in case not aware, links are broken after https://github.com/emilk/egui/commit/557bd56e1962266e765cc7b7958c1fd3f14fa3e1

The text turns blue but isn't actually interact-able. Lmk if you are unable to reproduce.

(https://github.com/lampsitter/egui_commonmark/issues/77)

[lucasmerlin]

Ah you're right, it's also broken for us: https://github.com/rerun-io/rerun/pull/9103#issuecomment-2841875402

Edit: Made an issue and a reproduction: https://github.com/emilk/egui/issues/6904

Edit2:

Fix is here: https://github.com/emilk/egui/pull/6905

[lucasmerlin]

~Needs one more cargo update once https://github.com/emilk/egui/pull/7320 is merged~ Done!

[lucasmerlin]

@lampsitter egui 0.32 is out 🎉 So this can now be merged