[jdk21u] RFR: 8313602: increase timeout for jdk/classfile/CorpusTest.java

[Matthias Baesken]

8313602: increase timeout for jdk/classfile/CorpusTest.java

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Commit messages:
 - Backport bdac348c80d451cefbc73eb8313e8511dbb0de31

Changes: https://git.openjdk.org/jdk21u/pull/91/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=91&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313602
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u/pull/91.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/91/head:pull/91

PR: https://git.openjdk.org/jdk21u/pull/91