Ruby 4 compatability #2008
Description
🎉 https://www.ruby-lang.org/en/news/2025/12/25/ruby-4-0-0-released/ 🎉
There are several warnings that appear when running specs warning us about upcoming changes that we will need to address when we upgrade to Ruby 4.
E.g.
opentelemetry-api-1.7.0/lib/opentelemetry/baggage/propagation/text_map_propagator.rb:7: warning: CGI library is removed from Ruby 4.0. Please use cgi/escape instead for CGI.escape and CGI.unescape features.