increases timeout for ipfs fetch

- the ipfs-pinner now has a http gateway roster which it goes
  through finding which gateway can fetch content in reasonable
  time. The timeout here needs to be big enough to allow going
  through the roster.

lib/rudder/ipfs/ipfs_interactor.ex

@@ -58,7 +58,7 @@ defmodule Rudder.IPFSInteractor do
 
     {:ok, %Finch.Response{body: body, headers: _, status: _}} =
       Finch.build(:get, "#{ipfs_url}/get?cid=#{cid}")
-      |> Finch.request(Rudder.Finch, receive_timeout: 120_000_000, pool_timeout: 120_000_000)
+      |> Finch.request(Rudder.Finch, receive_timeout: 150_000_000, pool_timeout: 150_000_000)
 
     end_fetch_ms = System.monotonic_time(:millisecond)
     Events.ipfs_fetch(end_fetch_ms - start_fetch_ms)