Bump procfs from 0.12.0 to 0.15.1 in /src/agent

Bumps [procfs](https://github.com/eminence/procfs) from 0.12.0 to 0.15.1.
- [Release notes](https://github.com/eminence/procfs/releases)
- [Commits](eminence/procfs@v0.12.0...v0.15.1)

---
updated-dependencies:
- dependency-name: procfs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/agent/Cargo.lock

@@ -37,7 +37,7 @@ winapi = "0.3"
 pete = "0.9"
 # For procfs, opt out of the `chrono` freature; it pulls in an old version
 # of `time`. We do not use the methods that the `chrono` feature enables.
-procfs = { version = "0.12", default-features = false, features=["flate2"] }
+procfs = { version = "0.15", default-features = false, features=["flate2"] }
 
 [dev-dependencies]
 env_logger = "0.9"

src/agent/coverage-legacy/Cargo.toml

@@ -25,7 +25,7 @@ debugger = { path = "../debugger" }
 pete = "0.9"
 # For procfs, opt out of the `chrono` freature; it pulls in an old version
 # of `time`. We do not use the methods that the `chrono` feature enables.
-procfs = { version = "0.12", default-features = false, features = ["flate2"] }
+procfs = { version = "0.15", default-features = false, features = ["flate2"] }
 
 [dev-dependencies]
 clap = { version = "4.0", features = ["derive"] }