Delay due to bug in node20 runtime

[dmelikhov]

Node 20 has changed keepAlive to be true by default:

Starting with this release, Node.js sets keepAlive to true by default. This means that any outgoing HTTP(s) connection will automatically use HTTP 1.1 Keep-Alive.

This has had an impact on many GitHub Actions including this one, making it much slower.

Scan is usually completed in under a second, while the action takes 2+ minutes to finish:

2:56PM INF scan completed in 61.1ms
2:56PM INF no leaks found

Please see related issues and possible workarounds:
nodejs/node#47228
actions/setup-node#878
ruby/setup-ruby#543