[code-reflection] Integrated: Bump version check in sanity.java to 24

[Gary Frost]

A one char change ;) 

sanity.java now checks for JDK 24.

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Commit messages:
 - Bump version check in sanity.java to 24

Changes: https://git.openjdk.org/babylon/pull/159/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=159&range=00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/babylon/pull/159.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/159/head:pull/159

PR: https://git.openjdk.org/babylon/pull/159