CNV-49076: Updated the HCO version variable

Author: jhradilek

_attributes/common-attributes.adoc

@@ -96,7 +96,7 @@ endif::[]
 // openshift virtualization (cnv)
 :VirtProductName: OpenShift Virtualization
 :VirtVersion: 4.16
-:HCOVersion: 4.16.3
+:HCOVersion: 4.16.4
 :CNVNamespace: openshift-cnv
 :CNVOperatorDisplayName: OpenShift Virtualization Operator
 :CNVSubscriptionSpecSource: redhat-operators