Test fail with OpenSSL 3

[espen]

Encountered an error while trying to do some changes to this gem.

  1) LetsEncrypt::Certificate#active? return true when certificate exists
     Failure/Error: certificate.present?
     
     OpenSSL::X509::CertificateError:
       ASN1 lib
     # ./app/models/lets_encrypt/certificate.rb:44:in `active?'
     # ./spec/models/lets_encrypt/certificate_spec.rb:16:in `block (3 levels) in <top (required)>'

Using openssl v 2.2.3 works.

Looks like OpenSSL v3 will fail for empty certificate: OpenSSL::X509::Certificate.new used in certificate_spec.rb. Yields a certificate when doing to_s on 2.2.3 but not in 3.x.

[elct9620]

ruby/openssl#369

Seems to have some issues to support OpenSSL 3 🤔

According to the Ruby document to create a new certificate but #to_pem #to_der are not work.
https://docs.ruby-lang.org/en/3.2/OpenSSL.html#module-OpenSSL-label-Creating+a+Certificate