Update 4.13 docs for OSDK migration to 1.28.z

Author: adellape

_attributes/common-attributes.adoc

@@ -167,8 +167,8 @@ endif::[]
 :lvms-first: Logical volume manager storage (LVM Storage)
 :lvms: LVM Storage
 //Operator SDK version
-:osdk_ver: 1.25.4
+:osdk_ver: 1.28.0
 //Operator SDK version that shipped with the previous OCP 4.x release
-:osdk_ver_n1: 1.22.0
+:osdk_ver_n1: 1.25.4
 :ztp-first: GitOps Zero Touch Provisioning (ZTP)
 :ztp: GitOps ZTP