Update env_logger requirement from 0.8.4 to 0.9.0

Updates the requirements on [env_logger](https://github.com/env-logger-rs/env_logger) to permit the latest version.
- [Release notes](https://github.com/env-logger-rs/env_logger/releases)
- [Changelog](https://github.com/env-logger-rs/env_logger/blob/main/CHANGELOG.md)
- [Commits](rust-cli/env_logger@v0.8.4...v0.9.0)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -67,7 +67,7 @@ rand_chacha = "0.3.1"
 rand_distr = "0.3"
 quickcheck = "0.9"
 log = "0.4.14"
-env_logger = "0.8.4"
+env_logger = "0.9.0"
 zerocopy = "0.5.0"
 byteorder = "1.4.3"