Fix guardian db hook when refresh the access token

lib/mobilizon_web/guardian.ex

@@ -61,6 +61,14 @@ defmodule MobilizonWeb.Guardian do
     end
   end
 
+  def on_refresh({old_token, old_claims}, {new_token, new_claims}, _options) do
+    with {:ok, _, _} <- Guardian.DB.on_refresh({old_token, old_claims}, {new_token, new_claims}) do
+      {:ok, {old_token, old_claims}, {new_token, new_claims}}
+    end
+  end
+
+  def on_exchange(old_stuff, new_stuff, options), do: on_refresh(old_stuff, new_stuff, options)
+
   #  def build_claims(claims, _resource, opts) do
   #    claims = claims
   #             |> encode_permissions_into_claims!(Keyword.get(opts, :permissions))