[ruby/rack] Update to Ruby 3.3-rc (#8446)

frameworks/Ruby/rack/rack-falcon.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.2
+FROM ruby:3.3-rc
 
 ENV BUNDLE_FORCE_RUBY_PLATFORM=true
 ENV RUBY_YJIT_ENABLE=1

frameworks/Ruby/rack/rack-unicorn.dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.2
+FROM ruby:3.3-rc
 
 #RUN apt-get update -yqq && apt-get install -yqq nginx
 

frameworks/Ruby/rack/rack.dockerfile

@@ -1,5 +1,4 @@
-
-FROM ruby:3.2
+FROM ruby:3.3-rc
 
 ENV BUNDLE_FORCE_RUBY_PLATFORM=true
 ENV RUBY_YJIT_ENABLE=1