[jdk17u] RFR: 8314677: Bump update version for OpenJDK: jdk-17.0.8.1

[Ben Taylor]

Proposed branch for [JDK-8314677](https://bugs.openjdk.org/browse/JDK-8314677)


Note that the merge preview on this branch will be incorrect as there is no upstream jdk17.0.8 branch, only a 17.0.8-ga tag. As such the PR is based on `master`.
Changes against the GA tag can be viewed at [diff](https://github.com/openjdk/jdk17u/compare/jdk-17.0.8-ga...benty-amzn:jdk17u:jdk17.0.8.1?expand=1)

See also previous discussion on #374

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Commit messages:
 - 8313765: Invalid CEN header (invalid zip64 extra data field size)
 - 8314677: Bump update version for OpenJDK: jdk-17.0.8.1

Changes: https://git.openjdk.org/jdk17u/pull/375/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u&pr=375&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314677
  Stats: 1002 lines in 6 files changed: 986 ins; 1 del; 15 mod
  Patch: https://git.openjdk.org/jdk17u/pull/375.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u.git pull/375/head:pull/375

PR: https://git.openjdk.org/jdk17u/pull/375