Translated using Weblate (#4531)

Co-authored-by: Massimo Pissarello <mapi68@gmail.com>
Co-authored-by: gallegonovato <fran-carro@hotmail.es>
Co-authored-by: ssantos <ssantos@web.de>
Co-authored-by: yangyangdaji <1504305527@qq.com>
Co-authored-by: Сергій <sergiy.goncharuk.1@gmail.com>

translations/messages.es.xlf

@@ -1726,6 +1726,10 @@
         <source>days</source>
         <target state="translated">Días</target>
       </trans-unit>
+      <trans-unit id="Ga4bvUX" resname="unpaid_vacation">
+        <source>unpaid_vacation</source>
+        <target state="translated">Vacaciones no retribuidas</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>