Bump trillium-prometheus from 0.2.0 to 0.3.0 in the trillium group

Bumps the trillium group with 1 update: [trillium-prometheus](https://github.com/divviup/trillium-prometheus).


Updates `trillium-prometheus` from 0.2.0 to 0.3.0
- [Commits](https://github.com/divviup/trillium-prometheus/commits)

---
updated-dependencies:
- dependency-name: trillium-prometheus
  dependency-version: 0.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: trillium
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -77,7 +77,7 @@ trillium-forwarding = "0.2.4"
 trillium-http = { version = "0.3.14", features = ["http-compat-1", "serde"] }
 trillium-logger = "0.4.5"
 trillium-macros = "0.0.6"
-trillium-prometheus = "0.2.0"
+trillium-prometheus = "0.3.0"
 trillium-redirect = "0.1.2"
 trillium-router = "0.4.1"
 trillium-rustls = "0.8.1"