Update rustc-hash requirement from 1.1.0 to 2.1.1
Updates the requirements on [rustc-hash](https://github.com/rust-lang/rustc-hash) to permit the latest version.
- [Changelog](https://github.com/rust-lang/rustc-hash/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/rustc-hash/compare/v1.2.0...v2.1.1)
---
updated-dependencies:
- dependency-name: rustc-hash
dependency-version: 2.1.1
dependency-type: direct:production
...
Signed-off-by: dependabot[bot] <support@github.com>