Man pages matching name cgi::session::serialize::yaml in section 3pm:

CGI::Session::Serialize::yaml.3pm.en	debian 10 / libcgi-session-serialize-yaml-perl
CGI::Session::Serialize::yaml.3pm.en	debian 11 / libcgi-session-serialize-yaml-perl
CGI::Session::Serialize::yaml.3pm.en	debian 12 / libcgi-session-serialize-yaml-perl