[IMP] l10n_sg: Change the Goods and Service tax rate

Starting from 1 January 2023, the Goods and Services Tax rate (GST) will
change and go from 7% to 8%

task-3098705

closes odoo/odoo#108964

X-original-commit: 9b039531bd0073f8abe1e6e949c2031615aa15a3
Signed-off-by: Josse Colpaert <jco@odoo.com>
Signed-off-by: Simon Morais Da Cunha (smdc) <smdc@odoo.com>

addons/l10n_sg/__manifest__.py

@@ -6,7 +6,7 @@
 {
     'name': 'Singapore - Accounting',
     'author': 'Tech Receptives',
-    'version': '2.0',
+    'version': '2.1',
     'category': 'Accounting/Localizations/Account Charts',
     'description': """
 Singapore accounting chart and localization.

addons/l10n_sg/data/account_tax_group_data.xml

@@ -9,5 +9,10 @@
             <field name="name">TAX 8%</field>
             <field name="country_id" ref="base.sg"/>
         </record>
+        <record id="tax_group_7" model="account.tax.group">
+            <field name="name">TAX 7%</field>
+            <field name="country_id" ref="base.sg"/>
+        </record>
+
     </data>
 </odoo>

addons/l10n_sg/data/l10n_sg_chart_data.xml

@@ -405,7 +405,7 @@
         </record>
 
         <record model="account.account.template" id="account_account_749">
-            <field name="name">Purchase Tax Account 8% TX7</field>
+            <field name="name">Purchase Tax Account 8% TX8</field>
             <field name="code">101370</field>
             <field name="account_type">asset_current</field>
             <field name="chart_template_id" ref="sg_chart_template"/>

addons/l10n_sg/migrations/2.1/post-migrate_update_tax.py

@@ -0,0 +1,6 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from odoo.addons.account.models.chart_template import update_taxes_from_templates
+
+
+def migrate(cr, version):
+    update_taxes_from_templates(cr, 'l10n_sg.sg_chart_template')