[jdk8u-dev] RFR: 8366574: Bump update version of OpenJDK: 8u482

[Andrew John Hughes]

Rampdown for 8u472 [has begun](https://mail.openjdk.org/pipermail/jdk8u-dev/2025-September/020424.html). 8u-dev needs to transition to 8u482.

PR will also need to wait on `openjdk8u482` being added to the bug database.

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Commit messages:
 - 8366574: Bump update version of OpenJDK: 8u482

Changes: https://git.openjdk.org/jdk8u-dev/pull/688/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=688&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8366574
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/688.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/688/head:pull/688

PR: https://git.openjdk.org/jdk8u-dev/pull/688