build(deps): bump attohttpc from 0.28.2 to 0.30.1

Bumps [attohttpc](https://github.com/sbstp/attohttpc) from 0.28.2 to 0.30.1.
- [Release notes](https://github.com/sbstp/attohttpc/releases)
- [Commits](sbstp/attohttpc@v0.28.2...v0.30.1)

---
updated-dependencies:
- dependency-name: attohttpc
  dependency-version: 0.30.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]