[Toybox] [PATCH] timeout.test: use POSIX "trap" syntax.

[enh]

This is failing on dash, which apparently can't cope with the "SIG"
prefix that everyone else can. Luckily everyone else can cope
without...
---
 tests/timeout.test | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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