Update env_logger requirement from 0.8 to 0.9 (#140)

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]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

trie-db/test/Cargo.toml

@@ -23,5 +23,5 @@ keccak-hasher = { path = "../../test-support/keccak-hasher", version = "0.15.2"
 reference-trie = { path = "../../test-support/reference-trie", version = "0.23.0" }
 hex-literal = "0.3"
 criterion = "0.3"
-env_logger = "0.8"
+env_logger = "0.9"
 log = "0.4"