Bump rand_os from 0.1.2 to 0.1.3 (#404)
Bump rand_os from 0.1.2 to 0.1.3 (#404)

Bumps [rand_os](https://github.com/rust-random/rand) from 0.1.2 to 0.1.3.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-random/rand/compare/rand_os-0.1.2...rand_os-0.1.3)

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