chore(l10n): update Arabic translations

Currently translated at 95.5% (108 of 113 strings)

Translation: Fossify/Messages
Translate-URL: https://hosted.weblate.org/projects/fossify/sms-messenger/ar/
Via: Weblate

Author: jonnysemon

app/src/main/res/values-ar/strings.xml

@@ -128,4 +128,5 @@
     <string name="keep_conversations_archived">أبقِ المحادثات مؤرشفة</string>
     <string name="me">أنا</string>
     <string name="enable_custom_notifications">تفعيل الإشعارات المخصصة</string>
+    <string name="update_message">حدّث الرسالة</string>
 </resources>