Add another curl spurious network error
Add another curl spurious network error

Witnessed in a [recent build][1] looks like this is another error that
should be safe to retry.

[1]: https://github.com/bytecodealliance/wasmtime/pull/788/checks?check_run_id=383658098#step:7:16

nipunn1313/cargo,vojtechkral/cargo,tsurai/cargo,tsurai/cargo,eminence/cargo,nipunn1313/cargo,rustyhorde/cargo,tshepang/cargo,nipunn1313/cargo,rustyhorde/cargo,rust-lang/cargo,rustyhorde/cargo,eminence/cargo,tsurai/cargo,rust-lang/cargo,rust-lang/cargo,vojtechkral/cargo,tsurai/cargo,tshepang/cargo,eminence/cargo,nipunn1313/cargo,vojtechkral/cargo,eminence/cargo,tshepang/cargo,rustyhorde/cargo,vojtechkral/cargo,tshepang/cargo,tsurai/cargo,rust-lang/cargo