Skip test_thread_profiling on 3.0+

Author: kaylareopelle

test/multiverse/suites/agent_only/thread_profiling_test.rb

@@ -57,6 +57,8 @@ def after_teardown
   # go only let a few cycles through, so we check less than 10
 
   def test_thread_profiling
+    skip 'Fails on Ruby 3.0+, see Issue #2947' if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.0')
+
     run_transaction_in_thread(:controller)
     run_transaction_in_thread(:task)