test: mark test as flaky

Refs: #51862

Ran into this a few times myself this week and also
seems to be a top failer in the reliability reports

Signed-off-by: Michael Dawson <[email protected]>
PR-URL: #52671
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Moshe Atlow <[email protected]>

Author: mhdawson

test/parallel/parallel.status

@@ -6,6 +6,9 @@ prefix parallel
 
 [true] # This section applies to all platforms
 
+# https://github.com/nodejs/node/issues/51862
+test-fs-read-stream-concurrent-reads: PASS, FLAKY
+
 [$system==win32]
 
 # Windows on x86