Updating translation for de_DE.

locale/de_DE.po

@@ -767,6 +767,10 @@ msgctxt "model:ir.action,name:act_purchase_form2"
 msgid "Purchases"
 msgstr "Einkäufe"
 
+msgctxt "model:ir.action,name:act_purchase_invoice_relate"
+msgid "Purchases"
+msgstr "Einkäufe"
+
 msgctxt "model:ir.action,name:act_return_form"
 msgid "Returns"
 msgstr "Rückgaben"