[IMP] purchase : Rename date_approve label

This commit is related to task ID 1869130.

closes odoo/odoo#27018

addons/purchase/models/purchase.py

@@ -84,7 +84,7 @@ class PurchaseOrder(models.Model):
              "delivery order sent by your vendor.")
     date_order = fields.Datetime('Order Date', required=True, states=READONLY_STATES, index=True, copy=False, default=fields.Datetime.now,\
         help="Depicts the date where the Quotation should be validated and converted into a purchase order.")
-    date_approve = fields.Date('Approval Date', readonly=1, index=True, copy=False)
+    date_approve = fields.Date('Confirmation Date', readonly=1, index=True, copy=False)
     partner_id = fields.Many2one('res.partner', string='Vendor', required=True, states=READONLY_STATES, change_default=True, track_visibility='always', help="You can find a vendor by its Name, TIN, Email or Internal Reference.")
     dest_address_id = fields.Many2one('res.partner', string='Drop Ship Address', states=READONLY_STATES,
         help="Put an address if you want to deliver directly from the vendor to the customer. "