chore(deps): bump tokio from 1.51.0 to 1.51.1 in /bots/echidnabot

Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.51.0 to 1.51.1.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.51.0...tokio-1.51.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.51.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]