test: mark test-http2-debug as flaky on LinuxONE

PR-URL: #58494
Refs: #58353
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Jake Yuesong Li <jake.yuesong@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Dario Piotrowicz <dario.piotrowicz@gmail.com>

Author: richardlau

test/parallel/parallel.status

@@ -55,6 +55,10 @@ test-esm-loader-hooks-inspect-wait: PASS, FLAKY
 # https://github.com/nodejs/node/issues/54534
 test-runner-run-watch: PASS, FLAKY
 
+[$system==linux && $arch==s390x]
+# https://github.com/nodejs/node/issues/58353
+test-http2-debug: PASS, FLAKY
+
 [$system==linux || $system==win32]
 # https://github.com/nodejs/node/issues/49605
 test-runner-watch-mode: PASS,FLAKY