[builder API] Increase/add Timeouts

[realbigsean]

Description

Thanks @ralexstokes for pointing this out.

We are currently using a 500ms timout on the getHeader request, but 1 second is specified. I don't think this should make any difference because we already are querying both the builder API and the local EE for a payload at the same time and comparing the two. The timeout on the local EE is 2 seconds, so changing the builder timeout shouldn't impact us negatively until we are past that.

Additionally, we should add timeouts for other requests to the builder API just to make sure a faulty relay doesn't interfere with processing elsewhere.