Add Rake task to run bundle update in examples

Introduces a new Rake task `examples:bundle_update` that iterates through all example folders, running `bundle update` in each one that contains a Gemfile. The task reports success or failure for each folder and exits with an error if any updates fail.

Author: wilsonsilva

Rakefile

@@ -148,4 +148,58 @@ namespace :examples do
       exit 1
     end
   end
+
+  desc 'Run bundle update on all example folders'
+  task :bundle_update do
+    examples_dir = File.join(Dir.pwd, 'examples')
+
+    unless Dir.exist?(examples_dir)
+      puts 'Examples directory not found'
+      exit 1
+    end
+
+    example_folders = Dir.glob(File.join(examples_dir, '*')).select { |path| Dir.exist?(path) }
+
+    if example_folders.empty?
+      puts 'No example folders found'
+      return
+    end
+
+    puts "Found #{example_folders.length} example folders:"
+    example_folders.each { |folder| puts "  - #{File.basename(folder)}" }
+    puts
+
+    failed_folders = []
+
+    example_folders.each do |folder|
+      gemfile_path = File.join(folder, 'Gemfile')
+
+      unless File.exist?(gemfile_path)
+        puts "Skipping #{File.basename(folder)} - no Gemfile found"
+        next
+      end
+
+      puts "Running bundle update in #{File.basename(folder)}..."
+
+      Dir.chdir(folder) do
+        system('bundle update')
+
+        if $CHILD_STATUS.success?
+          puts "  ✓ Successfully updated gems in #{File.basename(folder)}"
+        else
+          failed_folders << File.basename(folder)
+          puts "  ✗ Failed to bundle update in #{File.basename(folder)}"
+        end
+      end
+
+      puts
+    end
+
+    if failed_folders.empty?
+      puts 'All example folders processed successfully!'
+    else
+      puts "Failed to process #{failed_folders.length} folders: #{failed_folders.join(", ")}"
+      exit 1
+    end
+  end
 end