Update env_logger requirement from 0.8 to 0.9

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@v0.8.0...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

@@ -29,7 +29,7 @@ isahc-static-curl = ["isahc/static-curl"]
 sync = []
 
 [dev-dependencies]
-env_logger = "0.8"
+env_logger = "0.9"
 futures-await-test = "0.3"
 futures = "0.3"