Bump webpki from 0.22.0 to 0.22.2 in /rust/linksplatform-bot

Bumps [webpki](https://github.com/briansmith/webpki) from 0.22.0 to 0.22.2.
- [Commits](https://github.com/briansmith/webpki/commits)

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

Signed-off-by: dependabot[bot] <support@github.com>