[jdk20] RFR: 8298699: java/lang/reflect/IllegalArgumentsTest.java times out with slowdebug bits

[Daniel D. Daugherty]

A trivial fix to slightly increase the default timeout so that java/lang/reflect/IllegalArgumentsTest.java
passes with slowdebug bits.

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Commit messages:
 - 8298699: java/lang/reflect/IllegalArgumentsTest.java times out with slowdebug bits

Changes: https://git.openjdk.org/jdk20/pull/60/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20&pr=60&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298699
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk20/pull/60.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/60/head:pull/60

PR: https://git.openjdk.org/jdk20/pull/60