Bump the janus group in /divviup/rust with 2 updates (#41)

Bumps the janus group in /divviup/rust with 2 updates: [janus_core](https://github.com/divviup/janus) and [janus_messages](https://github.com/divviup/janus).


Updates `janus_core` from 0.6.3 to 0.6.4
- [Release notes](https://github.com/divviup/janus/releases)
- [Commits](divviup/janus@0.6.3...0.6.4)

Updates `janus_messages` from 0.6.3 to 0.6.4
- [Release notes](https://github.com/divviup/janus/releases)
- [Commits](divviup/janus@0.6.3...0.6.4)

---
updated-dependencies:
- dependency-name: janus_core
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: janus
- dependency-name: janus_messages
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: janus
...

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

divviup/rust/Cargo.toml

@@ -8,8 +8,8 @@ publish = false
 crate_type = ["cdylib"]
 
 [dependencies]
-janus_core = "0.6.3"
-janus_messages = "0.6.3"
+janus_core = "0.6.4"
+janus_messages = "0.6.4"
 jni = "0.21.1"
 prio = "0.15.3"
 rand = "0.8.5"