Update opentelemetry-semantic-conventions requirement from 0.12 to 0.13

Updates the requirements on [opentelemetry-semantic-conventions](https://github.com/open-telemetry/opentelemetry-rust) to permit the latest version.
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Commits](open-telemetry/opentelemetry-rust@v0.12.0...v0.13.0)

---
updated-dependencies:
- dependency-name: opentelemetry-semantic-conventions
  dependency-type: direct:production
...

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

init-tracing-opentelemetry/Cargo.toml

@@ -21,7 +21,7 @@ opentelemetry-otlp = { version = "0.13", optional = true }
 opentelemetry-stdout = { version = "0.1", features = [
   "trace",
 ], optional = true }
-opentelemetry-semantic-conventions = { version = "0.12", optional = true }
+opentelemetry-semantic-conventions = { version = "0.13", optional = true }
 opentelemetry-zipkin = { version = "0.18", features = [], optional = true }
 thiserror = "1.0"
 tonic = { version = "0.9", optional = true, features = ["tls"] }