Bump moka from 0.12.7 to 0.12.8 (#3281)

Bumps [moka](https://github.com/moka-rs/moka) from 0.12.7 to 0.12.8.
- [Changelog](https://github.com/moka-rs/moka/blob/main/CHANGELOG.md)
- [Commits](moka-rs/moka@v0.12.7...v0.12.8)

---
updated-dependencies:
- dependency-name: moka
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

aggregator/Cargo.toml

@@ -62,7 +62,7 @@ janus_core.workspace = true
 janus_messages.workspace = true
 k8s-openapi.workspace = true
 kube.workspace = true
-moka = { version = "0.12.7", features = ["future"] }
+moka = { version = "0.12.8", features = ["future"] }
 opentelemetry.workspace = true
 opentelemetry-otlp = { workspace = true, features = ["metrics"], optional = true }
 opentelemetry-prometheus = { workspace = true, optional = true }