Upgrade Hapi to v20

[mshustov]

We need to update hapi to the latest version with all the security fixes till the major release v8.0.
We might need to audit test coverage of the http server to make sure we cover all the user-facing behavior.

Release notes:

• v19
• v20

Blockers: Requires Nodejs v12 #61587
Dependencies: @elastic/kibana-security how soon you want to get it merged? It's not on our roadmap at the moment. Can you squeeze the issue into your backlog if the problem is time-sensitive?

[elasticmachine]

Pinging @elastic/kibana-platform (Team:Platform)

[legrego]

Blockers: Requires Nodejs v12 #61587

@watson is actively working on the Nodejs v12 upgrade, but needs assistance from other teams to debug test failures. We'll be in a good place to merge once those failures are resolved.

Dependencies: @elastic/kibana-security how soon you want to get it merged? It's not on our roadmap at the moment. Can you squeeze the issue into your backlog if the problem is time-sensitive?

Our only requirement is to upgrade before we reach 8.0, but yes this is something we can put in our backlog if we want to get this done before the core team has bandwidth. We'll likely leave the test coverage/audit to your team though.

[mshustov]

Our only requirement is to upgrade before we reach 8.0, but yes this is something we can put in our backlog if we want to get this done before the core team has bandwidth.

@legrego That would be awesome!

We'll likely leave the test coverage/audit to your team though.

It's fine.

[watson]

FYI: I've started working on this over at #85406