chore(deps): bump mockall from 0.11.4 to 0.12.0

Bumps [mockall](https://github.com/asomers/mockall) from 0.11.4 to 0.12.0.
- [Changelog](https://github.com/asomers/mockall/blob/master/CHANGELOG.md)
- [Commits](asomers/mockall@v0.11.4...v0.12.0)

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

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

crates/libcgroups/Cargo.toml

@@ -36,7 +36,7 @@ tracing = { version = "0.1.40", features = ["attributes"] }
 anyhow = "1.0"
 oci-spec = { version = "~0.6.4", features = ["proptests", "runtime"] }
 quickcheck = "1"
-mockall = { version = "0.11.4", features = [] }
+mockall = { version = "0.12.0", features = [] }
 clap = "4.1.6"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"