Bump crossbeam-utils from 0.6.5 to 0.6.6
Bump crossbeam-utils from 0.6.5 to 0.6.6

Bumps [crossbeam-utils](https://github.com/crossbeam-rs/crossbeam) from 0.6.5 to 0.6.6.
- [Release notes](https://github.com/crossbeam-rs/crossbeam/releases)
- [Changelog](https://github.com/crossbeam-rs/crossbeam/blob/master/CHANGELOG.md)
- [Commits](https://github.com/crossbeam-rs/crossbeam/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
alex/otp-cop