Update tower-http requirement from 0.5 to 0.6

Updates the requirements on [tower-http](https://github.com/tower-rs/tower-http) to permit the latest version.
- [Release notes](https://github.com/tower-rs/tower-http/releases)
- [Commits](tower-rs/tower-http@tower-http-0.5.0...tower-http-0.6.0)

---
updated-dependencies:
- dependency-name: tower-http
  dependency-type: direct:production
...

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

crates/example-tests/Cargo.toml

@@ -23,4 +23,4 @@ serde_json = "1.0"
 tokio = { version = "1.29.1", features = ["macros", "net", "time"] }
 tokio-tungstenite = "0.24"
 tower = { version = "0.5", features = ["make", "util"] }
-tower-http = { version = "0.5", features = ["fs", "util", "set-header"] }
+tower-http = { version = "0.6", features = ["fs", "util", "set-header"] }