Bump ruamel-yaml from 0.18.16 to 0.19.1

Bumps ruamel-yaml from 0.18.16 to 0.19.1.

---
updated-dependencies:
- dependency-name: ruamel-yaml
  dependency-version: 0.19.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -4,7 +4,7 @@ eventlet>=0.34.3; python_version >= "3.12"
 networkx>=1.9
 pbr>=1.9
 prometheus_client==0.23.1
-ruamel.yaml==0.18.16
+ruamel.yaml==0.19.1
 os_ken==3.1.0
 beka==0.4.2
 pytricia>=1.0.0