build(deps): bump hyper-util from 0.1.13 to 0.1.15

Bumps [hyper-util](https://github.com/hyperium/hyper-util) from 0.1.13 to 0.1.15.
- [Release notes](https://github.com/hyperium/hyper-util/releases)
- [Changelog](https://github.com/hyperium/hyper-util/blob/master/CHANGELOG.md)
- [Commits](hyperium/hyper-util@v0.1.13...v0.1.15)

---
updated-dependencies:
- dependency-name: hyper-util
  dependency-version: 0.1.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]