chore(deps-dev): bump undici in /packages/opentelemetry-node

Bumps [undici](https://github.com/nodejs/undici) from 7.12.0 to 7.14.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v7.12.0...v7.14.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 7.14.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]