Bump required Ruby version to 3.3

.github/workflows/bindings-ruby.yml

@@ -27,6 +27,6 @@ jobs:
     steps:
       - uses: ruby/setup-ruby@afeafc3d1ab54a631816aba4c914a0081c12ff2f # v1.310.0
         with:
-          ruby-version: '3.2'
+          ruby-version: '3.3'
       - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
       - run: rake test

bindings/ruby/whispercpp.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.test_files = s.files.select {|file| file.start_with? "test/"}
 
   s.extensions << 'ext/extconf.rb'
-  s.required_ruby_version = '>= 3.1.0'
+  s.required_ruby_version = '>= 3.3.0'
 
   #### Documentation and testing.
   s.homepage = 'https://github.com/ggml-org/whisper.cpp'