chore(deps): update init-tracing-opentelemetry requirement (#142)

Updates the requirements on [init-tracing-opentelemetry](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk) to permit the latest version.
- [Release notes](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk/releases)
- [Changelog](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk/blob/main/CHANGELOG.md)
- [Commits](davidB/tracing-opentelemetry-instrumentation-sdk@init-tracing-opentelemetry-v0.27.1...init-tracing-opentelemetry-v0.28.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pedro Ribeiro <47680931+tubarao312@users.noreply.github.com>

Author: dependabot[bot]

server/relay/Cargo.toml

@@ -26,7 +26,7 @@ utoipa = { version = "5.3.1", features = ["axum_extras", "uuid", "chrono"] }
 utoipa-axum = "0.2.0"
 time = { version = "0.3.36", features = ["serde"] }
 axum-tracing-opentelemetry = "0.28.0"
-init-tracing-opentelemetry = { version = "0.27.1", features = [
+init-tracing-opentelemetry = { version = "0.28.0", features = [
   "otlp",
   "tracing_subscriber_ext",
 ] }