chore(deps): bump num-traits from 0.2.15 to 0.2.19

Bumps [num-traits](https://github.com/rust-num/num-traits) from 0.2.15 to 0.2.19.
- [Changelog](https://github.com/rust-num/num-traits/blob/master/RELEASES.md)
- [Commits](rust-num/num-traits@num-traits-0.2.15...num-traits-0.2.19)

---
updated-dependencies:
- dependency-name: num-traits
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.toml

@@ -36,7 +36,7 @@ pipe-trait = "^0.4.0"
 smart-default = "^0.7.1"
 serde_yaml = "^0.9.14"
 num-bigint = "^0.4.0"
-num-traits = "^0.2.14"
+num-traits = "^0.2.19"
 alpm = "^3.0.5"
 git2 = "^0.18.3"
 petgraph = "^0.6.0"