chore(deps): bump config from 0.15.23 to 0.15.24 in /bots/echidnabot

Bumps [config](https://github.com/rust-cli/config-rs) from 0.15.23 to 0.15.24.
- [Changelog](https://github.com/rust-cli/config-rs/blob/main/CHANGELOG.md)
- [Commits](rust-cli/config-rs@v0.15.23...v0.15.24)

---
updated-dependencies:
- dependency-name: config
  dependency-version: 0.15.24
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]