RFR: 8353124: java/lang/Thread/virtual/stress/Skynet.java#Z times out on macosx-x64-debug

[Michael McMahon]

Hi,

This is a simple test update which increases a timeout from 300s to 400 to account for slow mac os test machines.
A repeat 50 test of :jdk_lang passes. I will run this a few more times before pushing, if the change is acceptable.

Thanks,
Michael

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Commit messages:
 - test update

Changes: https://git.openjdk.org/jdk/pull/25331/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25331&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353124
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25331.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25331/head:pull/25331

PR: https://git.openjdk.org/jdk/pull/25331