Update bevy_egui requirement from 0.21 to 0.22 (#393)

Updates the requirements on [bevy_egui](https://github.com/mvlabat/bevy_egui) to permit the latest version.
- [Release notes](https://github.com/mvlabat/bevy_egui/releases)
- [Changelog](https://github.com/mvlabat/bevy_egui/blob/main/CHANGELOG.md)
- [Commits](vladbat00/bevy_egui@v0.21.0...v0.22.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -30,7 +30,7 @@ bevy = { version = "0.11", default-features = false, features = [
   "serialize",
   "bevy_gilrs",
 ] }
-bevy_egui = { version = "0.21", optional = true }
+bevy_egui = { version = "0.22", optional = true }
 
 petitset = { version = "0.2.1", features = ["serde_compat"] }
 derive_more = { version = "0.99", default-features = false, features = [
@@ -43,7 +43,7 @@ fixedbitset = "0.4.2"
 once_cell = "1.17.1"
 
 [dev-dependencies]
-bevy_egui = { version = "0.21" }
+bevy_egui = { version = "0.22" }
 bevy = { version = "0.11", default-features = false, features = [
   "bevy_asset",
   "bevy_sprite",