[ruby/rage] Upgrade Ruby to 3.4 (#9276)

frameworks/Ruby/rage/Gemfile

@@ -3,7 +3,7 @@ source "https://rubygems.org"
 gem "rage-rb", "~> 1.3"
 
 gem "pg", "~> 1.0"
-gem "activerecord", "~> 7.0.0", require: "active_record"
+gem "activerecord", "~> 7.2.0", require: "active_record"
 
 # Build JSON APIs with ease
 # gem "alba"

frameworks/Ruby/rage/rage.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3
+FROM ruby:3.4-rc
 
 EXPOSE 8080
 WORKDIR /rage