[jdk17u-dev] RFR: 8292888: Bump update version for OpenJDK: jdk-17.0.6

[Christoph Langer]

Prepare for 17.0.6 development

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Commit messages:
 - JDK-8292888

Changes: https://git.openjdk.org/jdk17u-dev/pull/644/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=644&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292888
  Stats: 3 lines in 2 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/644.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/644/head:pull/644

PR: https://git.openjdk.org/jdk17u-dev/pull/644