chore(deps): bump msgpackr from 1.7.2 to 1.11.2 in /starters/hello-world

Bumps [msgpackr](https://github.com/kriszyp/msgpackr) from 1.7.2 to 1.11.2.
- [Release notes](https://github.com/kriszyp/msgpackr/releases)
- [Commits](https://github.com/kriszyp/msgpackr/commits)

---
updated-dependencies:
- dependency-name: msgpackr
  dependency-type: indirect
...

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

Author: dependabot[bot]