serv4 + submodule update (#12740)

Co-authored-by: DrSmugleaf <DrSmugleaf@users.noreply.github.com>

Content.Shared/Damage/Components/DamageableComponent.cs

@@ -43,7 +43,7 @@ namespace Content.Shared.Damage
         /// <remarks>
         ///     If this data-field is specified, this allows damageable components to be initialized with non-zero damage.
         /// </remarks>
-        [DataField("damage")]
+        [DataField("damage", readOnly: true)] //todo remove this readonly when implementing writing to damagespecifier
         public DamageSpecifier Damage = new();
 
         /// <summary>