test: increase the platform timeout for AIX
Checklist
-
tests and code linting passes -
the commit message follows commit guidelines
Affected core subsystem(s)
test
Description of change
There have been failures on AIX due to the slower default loopback performance. So far I've resisted updating the global timeout but seeing another new failure in a newly added test I now think the right thing is to just extending the platform timeout for AIX. This commit does that.
addresses: https://github.com/nodejs/node/issues/6333