Rename 'Crypto Suites' section as it only addresses signing?

[jogu]

The 'crypto suites' title for https://openid.github.io/OpenID4VC-HAIP/openid4vc-high-assurance-interoperability-profile-wg-draft.html#section-7 feels like it could be misleading, as that section only deals with signing, and the there's text in other sections about crypto for encryption.

Something like 'Signing Methods' or 'Crypto Suites for Signing/Validation' might be better?

[jogu]

Discussed on today's APAC WG call - suggestion from Gareth that we instead move the text about encryption into a similar section so that all the text about crypto is in roughly the same place.

Maybe rename the section to 'Cryptographic requirements' or 'Cryptographic Requirements for Signing".

[Sakurann]

encryption part only applies to openid4vp, so i think it's ok where it is now. did a quick PR renaming a section