Update eframe and egui requirement from 0.23 to 0.24

[jdenozi]

Type mismatch [E0308] expected &Context, but found &Context
caused by the mismatch version of egui and eframe with the latest release of egui and eframe 0.24

[nekowinston]

See #16, #17, this doesn't work without additional changes.
I guess I misunderstood the errors on that test failure, seems it works fine when both deps are bumped simultaneously?

[nickysemenza]

seems it works fine when both deps are bumped simultaneously?

that's been my experience - when the deps on my repo get auto-bumped separately it never works