test: fix invalid regular expressions in case test-trace-exit

PR-URL: https://github.com/nodejs/node/pull/33769
Fixes: https://github.com/nodejs/node/issues/30516


Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>