net-mgmt/rubygem-oxidized-web: Unbreak with Ruby 3.0
PR: 263470
Reported by: Einar Bjarni Halldórsson <einar@isnic.is>
Approved by: Nick Hilliard <nick@foobar.org> (maintainer)
MFH: 2022Q2
(cherry picked from commit 027f28dd50081220b9f9b33a85fda8377be5e94a)