RHDEVDOCS 5731 version number update in pipelines vars

Author: mramendi

_attributes/common-attributes.adoc

@@ -84,8 +84,8 @@ endif::[]
 //pipelines
 :pipelines-title: Red Hat OpenShift Pipelines
 :pipelines-shortname: OpenShift Pipelines
-:pipelines-ver: pipelines-1.12
-:pipelines-version-number: 1.12
+:pipelines-ver: pipelines-1.13
+:pipelines-version-number: 1.13
 :tekton-chains: Tekton Chains
 :tekton-hub: Tekton Hub
 :artifact-hub: Artifact Hub