Lets configure our axios instance with a timeout. This should help reduce the risk of our service keeping growing connection count and then falling over.
This should not be shorter than the mediawiki -> node request, configured in T215912, so that we don't end too early.
Could also be related to: T217035
The timeout for the mediawiki->node request before T215912 is the default given by: $wgHTTPTimeout which is 25s.