[jdk17u-dev] RFR: 8302692: [17u] Update GHA Boot JDK to 17.0.6

[Christoph Langer]

Bump boot JDK for Github Actions to 17.0.6

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Commit messages:
 - JDK-8302692

Changes: https://git.openjdk.org/jdk17u-dev/pull/1177/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1177&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8302692
  Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1177.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1177/head:pull/1177

PR: https://git.openjdk.org/jdk17u-dev/pull/1177