Increase CPU limit to 4 for NC rabbitmq and wordpress

TRIGGER_JOBS=enable-monitoring,enable-nextcloud,enable-velero,enable-wekan,enable-wordpress,enable-zulip

Fixes: #1140

flux2/apps/nextcloud/nextcloud-values-configmap.yaml

@@ -163,7 +163,7 @@ data:
         enabled: false
       resources:
         limits:
-          cpu: 500m
+          cpu: "4"
           memory: 512Mi
         requests:
           cpu: 200m

flux2/apps/wordpress/wordpress-values-configmap.yaml

@@ -88,7 +88,7 @@ data:
     # crashing
     resources:
       limits:
-        cpu: 500m
+        cpu: "4"
         memory: 512Mi
       requests:
         cpu: 100m