[IMP] l10n_sa: Update QR code & Rename 15% tax group to VAT Taxes

+ to comply with ZATCA provide a better demo VAT number

Part-of: odoo/odoo#124901

addons/l10n_sa/data/account_tax_group.xml

@@ -3,7 +3,7 @@
     <data noupdate="0">
         <!-- Account Tax Group -->
         <record id="sa_tax_group_taxes_15" model="account.tax.group">
-            <field name="name">Taxes 15%</field>
+            <field name="name">VAT Taxes</field>
             <field name="property_tax_payable_account_id" ref="sa_account_202003"/>
             <field name="property_tax_receivable_account_id" ref="sa_account_100103"/>
              <field name="country_id" ref="base.sa"/>

addons/l10n_sa/demo/demo_company.xml

@@ -15,7 +15,7 @@
 
     <record id="demo_company_sa" model="res.company">
         <field name="name">SA Company</field>
-        <field name="vat">123456789</field>
+        <field name="vat">310175397400003</field>
         <field name="partner_id" ref="partner_demo_company_sa"/>
     </record>
 

addons/l10n_sa/views/report_invoice.xml

@@ -24,7 +24,7 @@
                 <p>
                     <img t-if="o.l10n_sa_qr_code_str"
                          style="display:block;"
-                         t-att-src="'/report/barcode/?barcode_type=%s&amp;value=%s&amp;width=%s&amp;height=%s'%('QR', o.l10n_sa_qr_code_str, 130, 130)"/>
+                         t-att-src="'/report/barcode/?type=%s&amp;value=%s&amp;width=%s&amp;height=%s'%('QR', o.l10n_sa_qr_code_str, 200, 200)"/>
                 </p>
             </t>
         </xpath>