Use :utc_datetime

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

lib/pleroma/user.ex

@@ -1463,8 +1463,8 @@ defmodule Pleroma.User do
 
     expires_at =
       if expires_in > 0 do
-        NaiveDateTime.utc_now()
-        |> NaiveDateTime.add(expires_in)
+        DateTime.utc_now()
+        |> DateTime.add(expires_in)
       else
         nil
       end

lib/pleroma/user_relationship.ex

@@ -18,7 +18,7 @@ defmodule Pleroma.UserRelationship do
     belongs_to(:source, User, type: FlakeId.Ecto.CompatType)
     belongs_to(:target, User, type: FlakeId.Ecto.CompatType)
     field(:relationship_type, Pleroma.UserRelationship.Type)
-    field(:expires_at, :naive_datetime)
+    field(:expires_at, :utc_datetime)
 
     timestamps(updated_at: false)
   end