Update tracing-opentelemetry requirement from 0.27.0 to 0.28.0

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@v0.27.0...v0.28.0)

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

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

example-service/Cargo.toml

@@ -24,7 +24,7 @@ rand = "0.8"
 tarpc = { version = "0.35", path = "../tarpc", features = ["full"] }
 tokio = { version = "1", features = ["macros", "net", "rt-multi-thread"] }
 tracing = { version = "0.1" }
-tracing-opentelemetry = "0.27.0"
+tracing-opentelemetry = "0.28.0"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 opentelemetry_sdk = { version = "0.26.0", features = ["rt-tokio"] }
 opentelemetry-semantic-conventions = "0.16.0"

tarpc/Cargo.toml

@@ -58,7 +58,7 @@ tracing = { version = "0.1", default-features = false, features = [
     "attributes",
     "log",
 ] }
-tracing-opentelemetry = { version = "0.27.0", default-features = false }
+tracing-opentelemetry = { version = "0.28.0", default-features = false }
 opentelemetry = { version = "0.26.0", default-features = false }
 opentelemetry-semantic-conventions = "0.16.0"