Update simple_logger requirement from 1.9 to 4.0

Updates the requirements on [simple_logger](https://github.com/borntyping/rust-simple_logger) to permit the latest version.
- [Release notes](https://github.com/borntyping/rust-simple_logger/releases)
- [Commits](borntyping/rust-simple_logger@v1.9.0...v4.0.0)

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

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

Cargo.toml

@@ -32,7 +32,7 @@ serde = { version = "1.0", features = ["derive"], optional = true }
 serde_json = { version = "1.0", optional = true }
 
 [dev-dependencies]
-simple_logger = "1.9"
+simple_logger = "4.0"
 matches = "0.1"
 
 [package.metadata.release]