OCPBUGS-42310: Add new role to list of roles for compute nodes

** Added the role "roles/artifactregistry.reader" as a required role for compute nodes.

Author: barbacbd

modules/installation-gcp-permissions.adoc

@@ -53,9 +53,10 @@ The following roles are applied to the service accounts that the control plane a
 |`roles/compute.securityAdmin`
 |`roles/storage.admin`
 |`roles/iam.serviceAccountUser`
-.2+|Compute
+.3+|Compute
 |`roles/compute.viewer`
 |`roles/storage.admin`
+|`roles/artifactregistry.reader`
 |===
 
 ifeval::["{context}" == "installing-gcp-user-infra"]