RFR: 8356695: java/lang/StringBuilder/HugeCapacity.java failing with OOME

[Roger Riggs]

The failure of the new StringBuilder HugeCapacity test testHugePlus is intermittent with some GC's.
It could be reliably reproduced with the serialGC and parallelGC's.

Raise the memory limit from 6G to 8G to accommodate the new test with all GCs.

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Commit messages:
 - 8356695: java/lang/StringBuilder/HugeCapacity.java failing with OOME

Changes: https://git.openjdk.org/jdk/pull/25186/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25186&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356695
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25186.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25186/head:pull/25186

PR: https://git.openjdk.org/jdk/pull/25186