Bump simplelog from 0.9.0 to 0.12.0

Bumps [simplelog](https://github.com/drakulix/simplelog.rs) from 0.9.0 to 0.12.0.
- [Release notes](https://github.com/drakulix/simplelog.rs/releases)
- [Changelog](https://github.com/Drakulix/simplelog.rs/blob/master/CHANGELOG.md)
- [Commits](Drakulix/simplelog.rs@v0.9.0...v0.12.0)

---
updated-dependencies:
- dependency-name: simplelog
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -50,7 +50,7 @@ optional = true
 [dev-dependencies]
 radio = { version = "0.11.1", features = ["mock"] }
 linux-embedded-hal = "0.4.0-alpha.2"
-simplelog = "0.9.0"
+simplelog = "0.12.0"
 anyhow = "1.0.40"
 structopt = "0.3.21"
 radio-sx128x = "0.18.0"