Bump hashbrown from 0.15.0 to 0.16.0

Bumps [hashbrown](https://github.com/rust-lang/hashbrown) from 0.15.0 to 0.16.0.
- [Release notes](https://github.com/rust-lang/hashbrown/releases)
- [Changelog](https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md)
- [Commits](rust-lang/hashbrown@v0.15.0...v0.16.0)

---
updated-dependencies:
- dependency-name: hashbrown
  dependency-version: 0.16.0
  dependency-type: indirect
...

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Author: dependabot[bot]