Merge pull request #55465 from snarayan-redhat/OCPBUGS-6918_csiversion

OCPBUGS#6918: Updated csi version

Author: snarayan-redhat

storage/container_storage_interface/persistent-storage-csi.adoc

@@ -13,7 +13,7 @@ as persistent storage.
 
 [NOTE]
 ====
-{product-title} {product-version} supports version 1.5.0 of the link:https://github.com/container-storage-interface/spec[CSI specification].
+{product-title} {product-version} supports version 1.6.0 of the link:https://github.com/container-storage-interface/spec[CSI specification].
 ====
 
 include::modules/persistent-storage-csi-architecture.adoc[leveloffset=+1]