WordPress 6.8.1

[aaronjorbin]

Version bump and about page update based on https://core.trac.wordpress.org/changeset/59445 and https://core.trac.wordpress.org/changeset/58786 and one or two other times this has been done before.

Trac ticket:

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[github-actions]

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[audrasjb]

As package(-lock).json has already been updated with package updates, this changeset looks good to me.