Translations update from Weblate (#3339)

* Translated using Weblate (Croatian)
Co-authored-by: ABDULLAH MOHAMMED ALMONTSHRI <acc302@gmail.com>
Co-authored-by: Bogi Napoleon Wennerstrøm <bogi.wennerstrom@gmail.com>
Co-authored-by: Eric <alchemillatruth@purelymail.com>
Co-authored-by: J. Lavoie <j.lavoie@net-c.ca>
Co-authored-by: Jiri Nakola <github@nakola.fi>
Co-authored-by: Luiz Carlos Lucasv <csversut@gmail.com>
Co-authored-by: Milo Ivir <mail@milotype.de>
Co-authored-by: Oğuz Ersen <oguz@ersen.moe>
Co-authored-by: SC <lalocas@protonmail.com>
Co-authored-by: Wellington Terumi Uemura <wellingtonuemura@gmail.com>
Co-authored-by: Yaron Shahrabani <sh.yaron@gmail.com>
Co-authored-by: majorwave <majorwavebeats@gmail.com>

translations/validators.ar.xlf

@@ -54,6 +54,10 @@
         <source>A project needs to be selected.</source>
         <target>يجب تحديد مشروع.</target>
       </trans-unit>
+      <trans-unit id="ekO5eXI" resname="An equal username is already used.">
+        <source>An equal username is already used.</source>
+        <target state="needs-translation">تم استخدام اسم مستخدم مساوٍ بالفعل.</target>
+      </trans-unit>
     </body>
   </file>
 </xliff>