test: mark test-worker-take-heapsnapshot flaky

- Mark test-worker-take-heapsnapshot as flaky on
  arm with debug

Refs: #41204
Refs: #41209

Signed-off-by: Michael Dawson <mdawson@devrus.com>

PR-URL: #41253
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: mhdawson

test/pummel/pummel.status

@@ -16,6 +16,10 @@ test-crypto-timing-safe-equal-benchmarks: PASS,FLAKY
 
 [$system==macos]
 
+[($arch==arm || $arch==arm64) && $mode==debug]
+# https://github.com/nodejs/node/issues/41204
+test-worker-take-heapsnapshot: PASS, FLAKY
+
 [$arch==arm || $arch==arm64]
 
 [$system==solaris] # Also applies to SmartOS