Bump mockito from 1.5.0 to 1.6.0 (#3477)

Bumps [mockito](https://github.com/lipanski/mockito) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/lipanski/mockito/releases)
- [Commits](lipanski/mockito@1.5.0...1.6.0)

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

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

Cargo.toml

@@ -60,7 +60,7 @@ janus_interop_binaries = { version = "0.7.41", path = "interop_binaries" }
 janus_messages = { version = "0.7.41", path = "messages" }
 k8s-openapi = { version = "0.22.0", features = ["v1_26"] }  # keep this version in sync with what is referenced by the indirect dependency via `kube`
 kube = { version = "0.94.2", default-features = false, features = ["client", "rustls-tls"] }
-mockito = "1.5.0"
+mockito = "1.6.0"
 num_enum = "0.7.3"
 ohttp = { version = "0.5.1", default-features = false }
 opentelemetry = { version = "0.24", default-features = false, features = ["trace", "metrics"] }