ruamel.yaml: allow any 0.17.x release

Author: mr-c

requirements.txt

@@ -1,5 +1,5 @@
-ruamel.yaml >= 0.17.6, < 0.17.27;python_version>='3.7'
-ruamel.yaml >= 0.16.12, < 0.17.27
+ruamel.yaml >= 0.17.6, < 0.18;python_version>='3.7'
+ruamel.yaml >= 0.16.12, < 0.18
 rdflib>= 4.2.2, < 7.0.0
 rdflib>= 4.2.2, < 6.0.0;python_version<='3.6'
 rdflib-jsonld>=0.4.0, <= 0.6.1;python_version<='3.6'

setup.py

@@ -81,8 +81,8 @@
 
 install_requires = [
     "requests >= 1.0",
-    "ruamel.yaml >= 0.17.6, < 0.17.27;python_version>='3.7'",
-    "ruamel.yaml >= 0.16.12, < 0.17.27",
+    "ruamel.yaml >= 0.17.6, < 0.18;python_version>='3.7'",
+    "ruamel.yaml >= 0.16.12, < 0.18",
     "rdflib >= 4.2.2, < 7.0.0",
     "rdflib-jsonld>=0.4.0, <= 0.6.1;python_version<='3.6'",
     "mistune>=2.0.3,<2.1",