[FIX] group category to module_category_operations_purchase

Author: benwillig

purchase_fop_shipping/security/res_groups.xml

@@ -2,7 +2,7 @@
 <odoo>
     <record id="group_fop_shipping_purchase_manager" model="res.groups">
         <field name="name">FOP shipping Manager</field>
-        <field name="category_id" ref="base.module_category_purchase_management" />
+        <field name="category_id" ref="base.module_category_operations_purchase" />
         <field name="implied_ids" eval="[(4, ref('purchase.group_purchase_user'))]" />
         <field name="users" eval="[(4, ref('base.user_root'))]" />
     </record>