Merge pull request #181 from schurzi/ubuntu2004

add support for ubuntu20.04

Author: rndmh3ro

libraries/ssh_crypto.rb

@@ -212,7 +212,7 @@ def valid_privseparation # rubocop:disable Metrics/CyclomaticComplexity
       end
     when 'ubuntu'
       case inspec.os[:release]
-      when /^18\./
+      when /^18\./, /^20\./
         ps = ps75
       end
     when 'fedora', 'alpine', 'arch'