[jdk11u-dev] RFR: 8297887: Update Siphash

Tue Jul 4 11:25:06 UTC 2023

I backport this for parity with 11.0.21-oracle.

I had to resolve the Copyright, will mark as clean.

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Commit messages:
 - Backport bacf652311a74d93f6f802c51a1a2150522704cb

Changes: https://git.openjdk.org/jdk11u-dev/pull/2022/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2022&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297887
  Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2022.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2022/head:pull/2022

PR: https://git.openjdk.org/jdk11u-dev/pull/2022