RFR: 8371895: G1: TestUseGCOverheadLimit.java#G1 fails

[Thomas Schatzl]

Hi all,

  please review this fix to the `TestUseGCOverheadLimit` test to ease the CPU overhead requirement a bit further since it seems too high for some particularly loaded machines.

Testing: gha, reporter

Thanks,
  Thomas

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Commit messages:
 - 8371895

Changes: https://git.openjdk.org/jdk/pull/28321/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28321&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371895
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/28321.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28321/head:pull/28321

PR: https://git.openjdk.org/jdk/pull/28321