Omit irb related examples temporary

Merged: https://github.com/ruby/ruby/pull/12624

spec/bundler/commands/console_spec.rb

@@ -2,6 +2,12 @@
 
 RSpec.describe "bundle console", readline: true do
   before :each do
+    begin
+      require "irb"
+    rescue LoadError
+      skip "This spec requires IRB to be available"
+    end
+
     build_repo2 do
       # A minimal fake pry console
       build_gem "pry" do |s|

spec/bundler/commands/platform_spec.rb

@@ -950,6 +950,12 @@ G
     end
 
     it "starts IRB with the default group loaded when ruby version matches", :readline do
+      begin
+        require "irb"
+      rescue LoadError
+        skip "This spec requires IRB to be available"
+      end
+
       gemfile <<-G
         source "https://gem.repo1"
         gem "myrack"