chore(deps): update opentelemetry-otlp requirement from 0.14.0 to 0.29.0

Updates the requirements on [opentelemetry-otlp](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-otlp-0.14.0...opentelemetry-otlp-0.29.0)

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

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

Author: dependabot[bot]

examples/bank-accounting/Cargo.toml

@@ -15,7 +15,7 @@ eventually = { path = "../../eventually", features = [
 eventually-macros = { path = "../../eventually-macros" }
 eventually-postgres = { path = "../../eventually-postgres" }
 opentelemetry = "0.21.0"
-opentelemetry-otlp = "0.14.0"
+opentelemetry-otlp = "0.29.0"
 opentelemetry_sdk = { version = "0.21.2", features = ["rt-tokio"] }
 prost = "0.13.5"
 rust_decimal = "1.34.3"