Bump ruamel-yaml from 0.18.5 to 0.18.6 (#320)

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
...

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

requirements.txt

@@ -10,6 +10,6 @@ python-liquid==1.10.2 # used in endoflife.py to render version templates
 requests==2.31.0 # used in http.py to make HTTP requests simpler
 requests-futures==1.0.1 # used in http.py to be able to make async HTTP requests
 requests-cache==1.2.0 # used in http.py to be able to cache HTTP requests
-ruamel.yaml==0.18.5 # used in latest.py
+ruamel.yaml==0.18.6 # used in latest.py
 ruamel.yaml.clib==0.2.8 # used in latest.py
 soupsieve==2.5 # used in conjunction with beautifulsoup4