RFR: 8342044: Increase timeout of gc/shenandoah/oom/TestClassLoaderLeak.java

[Matthias Baesken]

Test gc/shenandoah/oom/TestClassLoaderLeak.java often times out on WIndows, we should increase the timeout values to avoid test errors.

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Commit messages:
 - JDK-8342044

Changes: https://git.openjdk.org/jdk/pull/21491/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21491&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342044
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21491.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21491/head:pull/21491

PR: https://git.openjdk.org/jdk/pull/21491