Bump opentelemetry-otlp from 0.30.0 to 0.31.0

Bumps [opentelemetry-otlp](https://github.com/open-telemetry/opentelemetry-rust) from 0.30.0 to 0.31.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-rust/blob/main/docs/release_0.30.md)
- [Commits](https://github.com/open-telemetry/opentelemetry-rust/commits)

---
updated-dependencies:
- dependency-name: opentelemetry-otlp
  dependency-version: 0.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -97,7 +97,7 @@ tracing = "0.1.41"
 tracing-subscriber = {version = "0.3.20", features = ["std", "env-filter"]}
 tracing-opentelemetry = "0.31.0"
 opentelemetry = "0.30.0"
-opentelemetry-otlp = { version = "0.30.0", default-features = false, features = ["http-proto", "reqwest-blocking-client"] }
+opentelemetry-otlp = { version = "0.31.0", default-features = false, features = ["http-proto", "reqwest-blocking-client"] }
 opentelemetry-semantic-conventions = "0.30"
 opentelemetry_sdk = { version = "0.30.0", features = ["rt-tokio"] }
 tokio = { version = "1.47.1", features = ["full"] }