test: mark addons/zlib-bindings/test flaky on arm

Refs: #30786

PR-URL: #32885
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Author: targos

test/addons/addon.status

@@ -9,6 +9,7 @@ prefix addons
 [$arch==arm]
 # https://github.com/nodejs/node/issues/30786
 openssl-binding/test: PASS,FLAKY
+zlib-binding/test: PASS,FLAKY
 
 [$system==ibmi]
 openssl-binding/test: SKIP