Update cucumber requirement from 0.19.0 to 0.20.0

Updates the requirements on [cucumber](https://github.com/cucumber-rs/cucumber) to permit the latest version.
- [Release notes](https://github.com/cucumber-rs/cucumber/releases)
- [Changelog](https://github.com/cucumber-rs/cucumber/blob/main/CHANGELOG.md)
- [Commits](cucumber-rs/cucumber@v0.19.0...v0.20.0)

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

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

Cargo.toml

@@ -56,7 +56,7 @@ dotenv = "0.15.0"
 tokio = { version = "1.6.0", features = ["rt-multi-thread", "macros"] }
 rand = "0.8.3"
 getrandom = { version = "0.2.2", features = ["js"] }
-cucumber = "0.19.0"
+cucumber = "0.20.0"
 async-trait = "0.1.51"
 
 [features]