Update libproc requirement from 0.12 to 0.13 (#66)

Updates the requirements on [libproc](https://github.com/andrewdavidmackenzie/libproc-rs) to permit the latest version.
- [Release notes](https://github.com/andrewdavidmackenzie/libproc-rs/releases)
- [Commits](andrewdavidmackenzie/libproc-rs@v0.12.0...v0.13.0)

---
updated-dependencies:
- dependency-name: libproc
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -22,7 +22,7 @@ regex = ">=1.6.0"
 [target.'cfg(target_os="macos")'.dependencies]
 mach_o_sys = "0.1.1"
 mach = "0.3.2"
-libproc = "0.12"
+libproc = "0.13"
 
 [target.'cfg(target_os="linux")'.dependencies]
 nix = {version = "0.26", default-features = false, features = ["ptrace", "sched", "signal"]}