Update rfd requirement from 0.12.1 to 0.13.0

Updates the requirements on [rfd](https://github.com/PolyMeilex/rfd) to permit the latest version.
- [Release notes](https://github.com/PolyMeilex/rfd/releases)
- [Changelog](https://github.com/PolyMeilex/rfd/blob/master/CHANGELOG.md)
- [Commits](PolyMeilex/rfd@0.12.1...0.13.0)

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

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

Cargo.toml

@@ -33,7 +33,7 @@ egui = { version = "0.24.1", default-features = false, features = [
 egui_extras = "0.24.2"
 hex = "0.4.3"
 plist = "1.6.0"
-rfd = "0.12.1"
+rfd = "0.13.0"
 serde = { version = "1.0.193", features = ["derive"] }
 egui-modal = "0.3.1"