Add Ruby 3.3

Merry Christmas! 🎄☃️

Signed-off-by: Chris Sinjakli <chris@sinjakli.co.uk>

Author: Sinjo

.circleci/config.yml

@@ -48,6 +48,7 @@ workflows:
             - cimg/ruby:3.0
             - cimg/ruby:3.1
             - cimg/ruby:3.2
+            - cimg/ruby:3.3
             - circleci/jruby:9.1
             - circleci/jruby:9.2
             - circleci/jruby:9.3