Add Ruby 3.4 to GitHub CI

Author: piotrmurach

.github/workflows/ci.yml

@@ -32,6 +32,7 @@ jobs:
           - "3.1"
           - "3.2"
           - "3.3"
+          - "3.4"
           - ruby-head
           - jruby-9.3
           - jruby-9.4