Update num-traits requirement from ^0.1 to ^0.2
Update num-traits requirement from ^0.1 to ^0.2

Updates the requirements on [num-traits](https://github.com/rust-num/num-traits) to permit the latest version.
- [Release notes](https://github.com/rust-num/num-traits/releases)
- [Changelog](https://github.com/rust-num/num-traits/blob/master/RELEASES.md)
- [Commits](https://github.com/rust-num/num-traits/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
rust-av/rust-av