ruamel.yaml: allow any 0.17.x release

Author: mr-c

requirements.txt

@@ -5,5 +5,5 @@ requests
 CacheControl < 0.13
 urllib3 < 2  # until CacheControl has a fixed release
 schema-salad >= 8.3.20220825114525, < 9
-ruamel.yaml >= 0.17.6, < 0.17.27;python_version>='3.7'
-ruamel.yaml >= 0.16.12, < 0.17.29
+ruamel.yaml >= 0.17.6, < 0.18;python_version>='3.7'
+ruamel.yaml >= 0.16.12, < 0.18