Translated using Weblate (#4551)

Co-authored-by: ButterflyOfFire <boffire@users.noreply.hosted.weblate.org>
Co-authored-by: Massimo Pissarello <mapi68@gmail.com>
Co-authored-by: Milo Ivir <mail@milotype.de>
Co-authored-by: Miloš Havlíček <milos.havlicek@cothema.com>
Co-authored-by: Wellington Terumi Uemura <wellingtonuemura@gmail.com>
Co-authored-by: Yaron Shahrabani <sh.yaron@gmail.com>
Co-authored-by: albanobattistella <albano_battistella@hotmail.com>
Co-authored-by: gallegonovato <fran-carro@hotmail.es>
Co-authored-by: сэр Аноним <mcptminei@gmail.com>

translations/invoice-calculator.ar.xlf

@@ -38,6 +38,18 @@
         <source>date</source>
         <target state="translated">التاريخ: إدخال واحد في اليوم (يستخدم تاريخ البدء)</target>
       </trans-unit>
+      <trans-unit id="oRa0mkz" resname="activity_user">
+        <source>activity_user</source>
+        <target state="translated">النشاط والمستخدِم</target>
+      </trans-unit>
+      <trans-unit id="AJm1952" resname="project_user">
+        <source>project_user</source>
+        <target state="translated">المشروع والمستخدِم</target>
+      </trans-unit>
+      <trans-unit id="0l1P9cz" resname="date_user">
+        <source>date_user</source>
+        <target state="translated">التاريخ والمستخدِم</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>