Bump cbor-x from 1.5.9 to 1.6.0 in /packages/rtckit

Bumps [cbor-x](https://github.com/kriszyp/cbor-x) from 1.5.9 to 1.6.0.
- [Release notes](https://github.com/kriszyp/cbor-x/releases)
- [Commits](kriszyp/cbor-x@v1.5.9...v1.6.0)

---
updated-dependencies:
- dependency-name: cbor-x
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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