[FIX] base: add kz to EEU country group

EEU is missing KZ among the member countries, this commit fixes this omission.

closes odoo/odoo#109936

Signed-off-by: William André (wan) <wan@odoo.com>

odoo/addons/base/data/res_country_data.xml

@@ -1633,7 +1633,7 @@
 
         <record id="eurasian_economic_union" model="res.country.group">
             <field name="name">Eurasian Economic Union</field>
-            <field name="country_ids" eval="[(6, 0, [ref('ru'),ref('by'),ref('am'),ref('kg')])]"/>
+            <field name="country_ids" eval="[(6, 0, [ref('ru'),ref('by'),ref('am'),ref('kg'),ref('kz')])]"/>
         </record>
     </data>
 </odoo>