Add an explicit step to a range (#15)

Without this, the line emits a warning when compiled with Elixir 1.17.

Author: alco

lib/hpax/table.ex

@@ -157,7 +157,7 @@ defmodule HPAX.Table do
   end
 
   def lookup_by_index(%__MODULE__{entries: entries, length: length}, index)
-      when index in @dynamic_table_start..(@dynamic_table_start + length - 1) do
+      when index >= @dynamic_table_start and index <= @dynamic_table_start + length - 1 do
     {:ok, Enum.at(entries, index - @dynamic_table_start)}
   end