Bump hyper-util from 0.1.14 to 0.1.15

---
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] <[email protected]>

Author: dependabot[bot]