RFR: Merge jdk8u:master

[Andrew John Hughes]

Merge jdk8u392-b06

GHA builds will not work until [JDK-8293107](https://bugs.openjdk.org/browse/JDK-8293107) is merged in 8u462-b01

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Commit messages:
 - Merge jdk8u392-b06
 - Merge
 - 8295894: Remove SECOM certificate that is expiring in September 2023

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk8u/pull/57/files
  Stats: 33 lines in 2 files changed: 0 ins; 30 del; 3 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/57.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u.git pull/57/head:pull/57

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/57