Update image tag for minimal cluster to use multi version

Author: ptankov

deploy/cr-minimal.yaml

@@ -4,7 +4,7 @@ metadata:
   name: minimal-cluster
 spec:
   crVersion: 1.18.0
-  image: percona/percona-server-mongodb:7.0.14-8
+  image: percona/percona-server-mongodb:7.0.14-8-multi
   unsafeFlags:
     replsetSize: true
     mongosSize: true