Update egui requirement from 0.21.0 to 0.22.0 in /serial_term

[dependabot]

Updates the requirements on egui to permit the latest version.

Release notes

Sourced from egui's releases.

0.22.0 - A plethora of small improvements

egui is an easy-to-use immediate mode GUI in pure Rust. eframe is the official egui framework, allowing you to run egui on both web and native.

There's a bunch of improvements in 0.22, especially to eframe:

• eframe now supports application icons on Windows and Mac. Set it with NativeOptions::icon_data
• eframe will now follow the system dark/light mode live with NativeOptions::follow_system_theme. Works both on native and on web!
• The error reporting on the web is also much nicer, with panics being caught, logged, and is accessible to JavaScript

Try the live demo at https://www.egui.rs/

• egui changelog
• eframe changelog

Changelog

Sourced from egui's changelog.

0.22.0 - 2023-05-23 - A plethora of small improvements

⭐ Added

• Scroll bar visibility options #2729 (thanks @​IVAN-MK7!)
• Add Grid::with_row_color #2519 (thanks @​imgurbot12!)
• Add raw mouse wheel event #2782 (thanks @​YgorSouza!)
• Improved plot groups and bounds handling #2410 (thanks @​s-nie!)
• Return plot transforms #2935
• Add Pointer::is_decidedly_dragging and could_any_button_be_click #2979
• Plot widget - allow disabling zoom and drag for x and y separately #2901 (thanks @​OmegaJak!)
• Add character limit to TextEdit #2816 (thanks @​wzid!)
• Add egui::Modifiers::contains #2989 (thanks @​Wumpf!)

🔧 Changed

• Improve vertical alignment of fonts #2724 (thanks @​lictex!)
• Transpose the value/satuation panel of the color picker #2727 (thanks @​IVAN-MK7!)
• Replace ComboBox::show_index String with Into<TextWidget> #2790 (thanks @​tosti007!)
• Replace tracing with log #2928
• Only show id clash warnings in debug builds by default #2930
• ⚠️ BREAKING: Plot::link_axis and Plot::link_cursor now take the name of the group #2410

🐛 Fixed

• Clear all keys and modifies on focus change, fixing "stuck keys" #2933
• Fix deadlock when using show_blocking_widget #2753 (thanks @​YgorSouza!)
• Fix the OS check for windows #2832 (thanks @​jleibs!)
• Fix scroll bars not appearing (#2826) #2827 (thanks @​lunixbochs!)
• Fix UI data() read mutability #2742 (thanks @​IS2511!)
• Menu State rect now uses menu frame rect instead of contents rect #2886 (thanks @​hats-np!)
• Hide Response::triple_clicked in docs #2867 (thanks @​ccaven!)
• request_repaint_after works even when called from background thread #2939
• Show alt key on Mac as "Option", not "Alt" #2981 (thanks @​Wumpf!)
• Mention store in TextEditState doc comment #2988 (thanks @​fxdave!)
• Fix typos #2866 (thanks @​fezjo!)

✨ Examples

• Fix resizable columns option in the table demo #2780 (thanks @​Bobo1239!)
• Update serial window example #2756 (thanks @​c-git!)
• Demo app: use enum instead of strings for demo-selector anchor #2781 (thanks @​XyLyXyRR!)
• Use env_logger in all examples #2934
• Rename examples/user_attention/README.mg to README.md #2948 (thanks @​MAlba124!)
• egui_demo_app: add some native window info b5c24d6

0.21.0 - 2023-02-08 - Deadlock fix and style customizability

• ⚠️ BREAKING: egui::Context now use closures for locking (#2625):
  • ctx.input().key_pressed(Key::A) -> ctx.input(|i| i.key_pressed(Key::A))
  • ui.memory().toggle_popup(popup_id) -> ui.memory_mut(|mem| mem.toggle_popup(popup_id))

⭐ Added

... (truncated)

Commits

• 307565e Release 0.22.0 - A plethora of small improvements
• 5fc82c7 New web demo for the 0.22 release
• cccdfd2 Cleanup ahead of release
• cb6bcde Update changelogs
• b2281c4 Update example screenshots
• b07a675 Fix egui_extras chonos dependency list
• bb252e2 Check egui_extras --all-features on CI (#3019)
• 8c5d235 cargo update (#3018)
• 03bb891 eframe: Use NativeOptions::AppId for the persistance location (#3014)
• 9d5b324 Fix typo in docs
• Additional commits viewable in compare view

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[dependabot]

A newer version of egui exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.