chore(deps): bump tunnel-agent and changelog

Bumps [tunnel-agent](https://github.com/mikeal/tunnel-agent) to 0.6.0 and updates ancestor dependency [changelog](https://github.com/dylang/changelog). These dependencies need to be updated together.


Updates `tunnel-agent` from 0.4.3 to 0.6.0
- [Commits](request/tunnel-agent@v0.4.3...v0.6.0)

Updates `changelog` from 1.3.0 to 1.4.2
- [Release notes](https://github.com/dylang/changelog/releases)
- [Changelog](https://github.com/dylang/changelog/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dylang/changelog/commits)

---
updated-dependencies:
- dependency-name: tunnel-agent
  dependency-type: indirect
- dependency-name: changelog
  dependency-type: direct:development
...

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

Author: dependabot[bot]