`launch_testing` regressions for Resolute

[claraberendsen]

Description

On Ubuntu Resolute launch_testing is failing with errors

E   AssertionError: 'terminating_proc.py-3' not found in "Found multiple processes matching name 'terminating_proc.py' and cmd_args 'None'. Procs: terminating_proc.py-19 /home/jenkins-agent/workspace/ci_linux/ws/install/launch_testing/lib/launch_testing/terminating_proc.py, terminating_proc.py-20 /home/jenkins-agent/workspace/ci_linux/ws/install/launch_testing/lib/launch_testing/terminating_proc.py --extra, terminating_proc.py-21 /home/jenkins-agent/workspace/ci_linux/ws/install/launch_testing/lib/launch_testing/terminating_proc.py node:=different_name"

It's possible that this is due to the new free threading support in CPython: https://docs.python.org/3/howto/free-threading-python.html

Test regressions

launch_testing.test.launch_testing.test_io_handler_and_assertions.TestIoHandlerAndAssertions.test_assertInStdout_notices_no_matching_proc
launch_testing.test.launch_testing.test_io_handler_and_assertions.TestIoHandlerAndAssertions.test_assertInStdout_notices_too_many_matching_procs
launch_testing.test.launch_testing.test_io_handler_and_assertions.TestIoHandlerAndAssertions.test_process_names
launch_testing.test.launch_testing.test_io_handler_and_assertions.TestIoHandlerAndAssertions.test_regex_matching