Security update

This is a security release of the Drupal 11 series.

This release fixes security vulnerabilities. Sites are urged to update immediately after reading the notes below and the security announcements:

Adds CSRF protection for enabling and disabling splits.

Adds CSRF protection for enabling and disabling splits.

Mark disabled tests as skipped.
Fix phpcs errors.
Fix email obfuscation problem.

Adds CSRF protection to client enable routes.