Bump ruamel-yaml from 0.18.5 to 0.18.6 (#405)

Bumps [ruamel-yaml]() from 0.18.5 to 0.18.6.

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

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

Author: dependabot[bot]

setup.cfg

@@ -20,7 +20,7 @@ python_requires = >=3.8
 install_requires =
     importlib-resources>=1.4.0;python_version<"3.9"
     tomli>=2.0;python_version<"3.11"
-    ruamel.yaml==0.18.5
+    ruamel.yaml==0.18.6
     jsonschema>=4.18.0,<5.0
     regress>=0.4.0
     requests<3.0