Bump ruamel-yaml from 0.18.6 to 0.18.9

Bumps ruamel-yaml from 0.18.6 to 0.18.9.

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

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

Author: dependabot[bot]

pyproject.toml

@@ -19,7 +19,7 @@ dependencies = [
     "pyperf==2.8.1",
     "rich==13.9.4",
     "rich-argparse==1.6.0",
-    "ruamel.yaml==0.18.6",
+    "ruamel.yaml==0.18.9",
     "scour==0.38.2",
     "tomli==2.0.1; python_version < '3.11'",
     "wheel",