Bump the otel group across 1 directory with 4 updates

Bumps the otel group with 4 updates in the / directory: [tracing-opentelemetry](https://github.com/tokio-rs/tracing-opentelemetry), [opentelemetry](https://github.com/open-telemetry/opentelemetry-rust), [opentelemetry-otlp](https://github.com/open-telemetry/opentelemetry-rust) and [opentelemetry_sdk](https://github.com/open-telemetry/opentelemetry-rust).


Updates `tracing-opentelemetry` from 0.28.0 to 0.29.0
- [Release notes](https://github.com/tokio-rs/tracing-opentelemetry/releases)
- [Changelog](https://github.com/tokio-rs/tracing-opentelemetry/blob/v0.1.x/CHANGELOG.md)
- [Commits](tokio-rs/tracing-opentelemetry@v0.28.0...v0.29.0)

Updates `opentelemetry` from 0.27.1 to 0.28.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Commits](open-telemetry/opentelemetry-rust@opentelemetry-0.27.1...opentelemetry-0.28.0)

Updates `opentelemetry-otlp` from 0.27.0 to 0.28.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Commits](open-telemetry/opentelemetry-rust@opentelemetry-otlp-0.27.0...opentelemetry-otlp-0.28.0)

Updates `opentelemetry_sdk` from 0.27.1 to 0.28.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-rust/releases)
- [Commits](open-telemetry/opentelemetry-rust@opentelemetry_sdk-0.27.1...opentelemetry_sdk-0.28.0)

---
updated-dependencies:
- dependency-name: tracing-opentelemetry
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: otel
- dependency-name: opentelemetry
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: otel
- dependency-name: opentelemetry-otlp
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: otel
- dependency-name: opentelemetry_sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: otel
...

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

Author: dependabot[bot]