build(deps): bump num_cpus from 1.13.0 to 1.13.1

Bumps [num_cpus](https://github.com/seanmonstar/num_cpus) from 1.13.0 to 1.13.1.
- [Release notes](https://github.com/seanmonstar/num_cpus/releases)
- [Changelog](https://github.com/seanmonstar/num_cpus/blob/master/CHANGELOG.md)
- [Commits](seanmonstar/num_cpus@v1.13.0...v1.13.1)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -25,7 +25,7 @@ graphql-parser = "0.4.0"
 lazy_static = "1.4.0"
 mockall = "0.8.3"
 num-bigint = { version = "^0.2.6", features = ["serde"] }
-num_cpus = "1.13.0"
+num_cpus = "1.13.1"
 num-traits = "0.2.14"
 rand = "0.6.1"
 semver = {version = "1.0.3", features = ["serde"]}