Update procfs requirement from 0.14.1 to 0.15.0 (#95)

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@v0.14.1...v0.15.0)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -34,5 +34,5 @@ path = "src/dmesg.rs"
 bindgen = { version = "0.64.0", default-features = false, features = ["runtime"] }
 
 [target.'cfg(target_os = "linux")'.dev-dependencies]
-procfs = "0.14.1"
+procfs = "0.15.0"
 tempfile = "3.3.0"