Update deps and replace FrameBuilder to epi::backend::FrameData

[haricot]

This PR updated the dependencies and tried to update code related hasenbanck/egui_wgpu_backend#51, but there seems to be a problem with the texture allocator with egui_demo_lib/apps/color_test :

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Internal("user texture 0 not found")', src/main.rs:172:22
stack backtrace:
   0: rust_begin_unwind
             at /rustc/f1ce0e6a00593493a12e0e3662119786c761f375/library/std/src/panicking.rs:498:5
   1: core::panicking::panic_fmt
             at /rustc/f1ce0e6a00593493a12e0e3662119786c761f375/library/core/src/panicking.rs:107:14
   2: core::result::unwrap_failed
             at /rustc/f1ce0e6a00593493a12e0e3662119786c761f375/library/core/src/result.rs:1690:5
   3: core::result::Result<T,E>::unwrap
             at /rustc/f1ce0e6a00593493a12e0e3662119786c761f375/library/core/src/result.rs:1018:23
   4: egui_example::main::{{closure}}
             at ./src/main.rs:164:17
   5: winit::platform_impl::platform::sticky_exit_callback
             at .cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.26.1/src/platform_impl/linux/mod.rs:753:5
   6: winit::platform_impl::platform::x11::EventLoop<T>::run_return
             at .cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.26.1/src/platform_impl/linux/x11/mod.rs:310:21
   7: winit::platform_impl::platform::x11::EventLoop<T>::run
             at .cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.26.1/src/platform_impl/linux/x11/mod.rs:392:9
   8: winit::platform_impl::platform::EventLoop<T>::run
             at .cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.26.1/src/platform_impl/linux/mod.rs:669:56
   9: winit::event_loop::EventLoop<T>::run
             at .cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.26.1/src/event_loop.rs:154:9
  10: egui_example::main
             at ./src/main.rs:97:5
  11: core::ops::function::FnOnce::call_once
             at /rustc/f1ce0e6a00593493a12e0e3662119786c761f375/library/core/src/ops/function.rs:227:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

although i don't need this feature currently, I noticed that mesh.texture_id (Egui) https://github.com/hasenbanck/egui_wgpu_backend/blob/master/src/lib.rs#L348 come user (0) when I click on color test.

[hasenbanck]

Fine for now. Maybe somebody can fix it later ,since I'm not using egui anymore.