Update procfs requirement from 0.15.1 to 0.16.0

Updates the requirements on [procfs](https://github.com/eminence/procfs) to permit the latest version.
- [Release notes](https://github.com/eminence/procfs/releases)
- [Commits](eminence/procfs@v0.15.1...v0.16.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -26,7 +26,7 @@ rlimit = "0.10.0"
 
 [target.'cfg(target_os = "linux")'.dependencies]
 once_cell = "1.13.1"
-procfs = { version = "0.15.1", default-features = false }
+procfs = { version = "0.16.0", default-features = false }
 
 [target.'cfg(target_os = "windows")'.dependencies.windows]
 version = "0.51.0"