Update fon requirement from 0.5 to 0.6

Updates the requirements on [fon](https://github.com/ardaku/fon) to permit the latest version.
- [Release notes](https://github.com/ardaku/fon/releases)
- [Changelog](https://github.com/ardaku/fon/blob/stable/CHANGELOG.md)
- [Commits](ardaku/fon@v0.5.0...v0.6.0)

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

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

Cargo.toml

@@ -28,7 +28,7 @@ edition = "2018"
 
 # For all platforms
 [dependencies.fon]
-version = "0.5"
+version = "0.6"
 
 [dependencies.pasts]
 version = "0.12"