Update egui requirement from 0.25 to 0.26

Updates the requirements on [egui](https://github.com/emilk/egui) to permit the latest version.
- [Release notes](https://github.com/emilk/egui/releases)
- [Changelog](https://github.com/emilk/egui/blob/master/CHANGELOG.md)
- [Commits](emilk/egui@0.25.0...0.26.0)

---
updated-dependencies:
- dependency-name: egui
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -70,7 +70,7 @@ eframe = { version = "0.25", features = [
     "wayland",
     "x11",
 ], default-features = false }
-egui = { version = "0.25", features = ["log", "color-hex"] }
+egui = { version = "0.26", features = ["log", "color-hex"] }
 egui-wgpu = { version = "0.25" }
 egui_file = "0.14.1"
 egui_extras = { version = "0.25", features = ["svg", "image"] }