RFR: 8297887: Update Siphash

[Lois Foltan]

On Wed, 24 May 2023 12:59:36 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> There was a small update to the copyright in the SipHash code that we're using, so reflecting that change in our sources.

Looks good and trivial.

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Marked as reviewed by lfoltan (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14124#pullrequestreview-1441965841