Update tracing-opentelemetry requirement from 0.25 to 0.26

Updates the requirements on [tracing-opentelemetry](https://github.com/tokio-rs/tracing-opentelemetry) to permit the latest version.
- [Release notes](https://github.com/tokio-rs/tracing-opentelemetry/releases)
- [Changelog](https://github.com/tokio-rs/tracing-opentelemetry/blob/v0.1.x/CHANGELOG.md)
- [Commits](tokio-rs/tracing-opentelemetry@v0.25.0...v0.26.0)

---
updated-dependencies:
- dependency-name: tracing-opentelemetry
  dependency-type: direct:production
...

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

Cargo.toml

@@ -22,7 +22,7 @@ task-local-extensions = "0.1.3"
 thiserror = "1.0.38"
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 tracing = "0.1"
-tracing-opentelemetry = "0.25"
+tracing-opentelemetry = "0.26"
 tracing-subscriber = "0.3"
 
 [dev-dependencies]