Update opentelemetry-semantic-conventions requirement from 0.27 to 0.29

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@opentelemetry-semantic-conventions-0.27.0...opentelemetry-semantic-conventions-0.29.0)

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

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

Author: dependabot[bot]

lambda-runtime/Cargo.toml

@@ -41,7 +41,7 @@ hyper-util = { workspace = true, features = [
 ] }
 lambda_runtime_api_client = { version = "0.11.1", path = "../lambda-runtime-api-client", default-features = false }
 miette = { version = "7.2.0", optional = true }
-opentelemetry-semantic-conventions = { version = "0.27", optional = true, features = ["semconv_experimental"] }
+opentelemetry-semantic-conventions = { version = "0.29", optional = true, features = ["semconv_experimental"] }
 pin-project = "1"
 serde = { version = "1", features = ["derive", "rc"] }
 serde_json = "^1"