[SITE-2088] Update to WordPress 6.6.2. For more information, see https://wordpress.org/news/2024/09/wordpress-6-6-2-maintenance-release/

[pantheon-upstream]

Update from WordPress 6.6.1 to WordPress 6.6.2.

Before merging this PR, check the build results on CircleCI, and then visit the test site and confirm that the correct version of WordPress was, in fact, installed and tested.

Optionally, you may also create your own test site:

• Create a new WordPress site on Pantheon.
• When site creation is finished, visit dashboard.
• Switch to "git" mode.
• Clone your site locally.
• Apply the files from this PR on top of your local checkout.
  • git remote add wp git@github.com:pantheon-systems/WordPress.git
  • git fetch wp
  • git merge wp/update-6.6.2
• Push your files back up to Pantheon.
• Switch back to sftp mode.
• Visit your site and step through the installation process.

[guardrails[bot]]

:warning: We detected 1 security issue in this pull request:

Insecure Access Control (1)

Severity | Details | Docs :-: | :-- | :-: Low | Title: **Insecure HTTP redirect**
https://github.com/pantheon-systems/WordPress/blob/16d627a8c7f8fcf4e63fa1cb4765b0a963c9107a/wp-content/mu-plugins/pantheon-mu-plugin/inc/compatibility/fixes/class-acceleratedmobilepagesfix.php#L35 | [:books:](https://docs.guardrails.io/docs/en/vulnerabilities/php/insecure_access_control.html?utm_source=ghpr#http-redirect-gr) More info on how to fix Insecure Access Control in [PHP](https://docs.guardrails.io/docs/en/vulnerabilities/php/insecure_access_control.html?utm_source=ghpr).

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[pwtyler]

Will address guardrails in the mu project ^ 😁