Rename EMS to Extended Main Secret (draft RFC 8446bis-13)

[bwbroersma]

I was looking at tls-extensiontype-values at the IANA registry and noticed: 23 is renamed to extended_main_secret by RFC 8446bis-13.

Note it's everywhere:

• content (incl. news)
• API & OpenAPI Spec
• models / DB / migrations
• reports / html template

So properly changing this, will be some work (incl. migrations).

[Christian-NCSC-NL]

I'll give a bump here once I see once the draft is published 👍 It's already in the IESG publication queue so I expect not too far from now.

[WKobes]

RFC 9846 is published