[FIX] l10n_mx: Add sequence to taxes for IVA 8%

Since those taxes are missing a sequence and they're at the bottom of
the data, they're being taken as the default ones for the mexican chart
of accounts. However, the default taxes for sales and purchases should
be IVA 16%.

closes odoo/odoo#31651

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/l10n_mx/data/account_tax_data.xml

@@ -200,6 +200,7 @@
         <field name="tax_exigibility">on_payment</field>
         <field name="cash_basis_account" ref="cuenta118_01"/>
         <field name="tag_ids" eval="[(6,0,[ref('tag_diot_8')])]"/>
+        <field name="sequence" eval="10"/>
     </record>
 
     <record id="tax17" model="account.tax.template">
@@ -215,6 +216,7 @@
         <field name="tax_group_id" ref="tax_group_iva_8"/>
         <field name="tax_exigibility">on_payment</field>
         <field name="cash_basis_account" ref="cuenta208_01"/>
+        <field name="sequence" eval="10"/>
     </record>
   </data>
 </odoo>