Bump num-traits from 0.2.11 to 0.2.12 (#694)
Bump num-traits from 0.2.11 to 0.2.12 (#694)

Bumps [num-traits](https://github.com/rust-num/num-traits) from 0.2.11 to 0.2.12.
- [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/compare/num-traits-0.2.11...num-traits-0.2.12)

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

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
alex/ct-tools,alex/ct-tools