Bump prometheus-client from 0.18.0 to 0.19.0

Bumps [prometheus-client](https://github.com/prometheus/client_python) from 0.18.0 to 0.19.0.
- [Release notes](https://github.com/prometheus/client_python/releases)
- [Commits](prometheus/client_python@v0.18.0...v0.19.0)

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

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

pyproject.toml

@@ -13,7 +13,7 @@ k8s = "^0.22"
 pydantic = "^2.5.1"
 requests = "^2"
 requests-toolbelt = "^1.0.0"
-prometheus-client = "^0.18.0"
+prometheus-client = "^0.19.0"
 pydantic-settings = "^2.1.0"
 
 [tool.poetry.dev-dependencies]