[jdk8u-dev] RFR: 8373250: Bump update version of OpenJDK: 8u492

[Andrew John Hughes]

Rampdown for 8u482 [has begun](https://mail.openjdk.org/pipermail/jdk8u-dev/2025-December/020792.html). 8u-dev needs to transition to 8u492.

PR will also need to wait on openjdk8u492 being added to the bug database.

-------------

Commit messages:
 - 8373250: Bump update version of OpenJDK: 8u492

Changes: https://git.openjdk.org/jdk8u-dev/pull/732/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=732&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373250
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/732.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/732/head:pull/732

PR: https://git.openjdk.org/jdk8u-dev/pull/732