[ruby/openssl] Enable HKDF support for LibreSSL 3.6 and later
LibreSSL 3.6 added support for HKDF in EVP. Enable this in ossl_kdf.c.
https://github.com/ruby/openssl/commit/9bdd39a7e2
[ruby/openssl] Enable HKDF support for LibreSSL 3.6 and later
LibreSSL 3.6 added support for HKDF in EVP. Enable this in ossl_kdf.c.
https://github.com/ruby/openssl/commit/9bdd39a7e2