[CMSP-903] WordPress 6.5 docs & release note

[jazzsequence]

Summary

Performant Translations on Pantheon - A new guide for how to use and work with WordPress' Performant Translations (.l10n.php files) on Pantheon Release Notes - WordPress 6.5 release note

Dependencies and Timing

Release:

• [ ] When ready
• [x] After date: March 26, 2024 (or when WordPress 6.5 releases)

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Post Launch

Do not remove - To be completed by the docs team upon merge:

• [ ] Redirect /old-path/ => /new-path/ (if applicable)
• [ ] Include/exclude pages ^ respectively within docs search service provider (if applicable)
• [ ] For Heroes - add a props post to the discussion board.
• [ ] Remove from the project board