Merge pull request #4381 from DataDog/tonycthsu/flaky-psysh

Remove loading `psych` gem early to fix cucumber spec

Author: TonyCTHsu

spec/datadog/core/environment/execution_spec.rb

@@ -170,26 +170,12 @@ def test_it_does_something_useful
 
         let(:script) do
           <<-'RUBY'
-            # Under Ruby 3.0 through 3.2 there is a weird error that occurs
-            # in CI where two copies of psych get loaded in the same process,
-            # and even more strangely the first version is a newer one from
-            # gem and the second one is the older one from Ruby standard
-            # library. Try to work around this situation by forcing psych
-            # to be loaded from (some) gem.
-            # We still don't know exactly what is causing the original issue.
-            gem 'psych'
-
             require 'bundler/inline'
 
             gemfile(true) do
               source 'https://rubygems.org'
-              if RUBY_VERSION >= '3.4'
-                # Cucumber is broken on Ruby 3.4, requires the fix in
-                # https://github.com/cucumber/cucumber-ruby/pull/1757
-                gem 'cucumber', '>= 3', git: 'https://github.com/cucumber/cucumber-ruby'
-              else
-                gem 'cucumber', '>= 3'
-              end
+
+              gem 'cucumber', '>= 3', '<= 9.2.1'
             end
 
             load Gem.bin_path('cucumber', 'cucumber')