test: mark test-child-process-fork-args as flaky on Windows

PR-URL: nodejs#32950
Refs: nodejs#32863
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>

test/parallel/parallel.status

@@ -9,6 +9,8 @@ prefix parallel
 test-http2-reset-flood: PASS,FLAKY
 
 [$system==win32]
+# https://github.com/nodejs/node/issues/32863
+test-child-process-fork-args: PASS,FLAKY
 # https://github.com/nodejs/node/issues/20750
 test-http2-client-upload: PASS,FLAKY
 # https://github.com/nodejs/node/issues/20750