[ruby/openssl] test/openssl/test_ssl: use TLS 1.2 for finished_messages on LibreSSL
LibreSSL 2.2.x has a bug in the Finished message handling with TLS 1.3. This is fixed by LibreSSL 3.3.2.
https://github.com/ruby/openssl/commit/0bea59d245
[ruby/openssl] test/openssl/test_ssl: use TLS 1.2 for finished_messages on LibreSSL
LibreSSL 2.2.x has a bug in the Finished message handling with TLS 1.3.
This is fixed by LibreSSL 3.3.2.
https://github.com/ruby/openssl/commit/0bea59d245