Always set timeout on requests (#2064)
If you don't set a timeout, your request may hang indefinitely.
The timeout parameter is used for connect and read timeouts. The whole request
may take longer than the timeout; but if the connection takes longer than the
timeout, or if the connection fails to send more data for an interval longer than
the timeout, it will fail.
I chose 5 seconds for the upload_file, which (at least when run on replicate
infrastructure) is always to an endpoint in the same data center.
I chose 10 seconds for downloading URLFile inputs as they may be making a
request over the public internet.
Co-authored-by: Philip Potter <phil@replicate.com>
