Bump the load-gen-gradle-deps group in /load-generator with 1 update (#…

…1492)

Bumps the load-gen-gradle-deps group in /load-generator with 1 update: [io.opentelemetry:opentelemetry-bom](https://github.com/open-telemetry/opentelemetry-java).

- [Release notes](https://github.com/open-telemetry/opentelemetry-java/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java@v1.31.0...v1.32.0)

---
updated-dependencies:
- dependency-name: io.opentelemetry:opentelemetry-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: load-gen-gradle-deps
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>