Upgrade ruamel.yaml.clib to work with Python 3.11 (#9426)

ruamel.yaml.clib did not build with the upcoming Python 3.11.

Cf. https://sourceforge.net/p/ruamel-yaml-clib/tickets/9/

ruamel.yaml.clib==0.2.7 fixes the issue.

requirements-2.11.txt

@@ -6,5 +6,5 @@ netaddr==0.7.19
 pbr==5.4.4
 jmespath==0.9.5
 ruamel.yaml==0.16.10
-ruamel.yaml.clib==0.2.6
+ruamel.yaml.clib==0.2.7
 MarkupSafe==1.1.1

requirements-2.12.txt

@@ -6,5 +6,5 @@ netaddr==0.7.19
 pbr==5.4.4
 jmespath==0.9.5
 ruamel.yaml==0.16.10
-ruamel.yaml.clib==0.2.6
+ruamel.yaml.clib==0.2.7
 MarkupSafe==1.1.1