Dispatch for Telex v1.6.2

Changed

• Refreshed Composer and npm dependencies (PHPStan, @wordpress/scripts / @wordpress/icons, WP-CLI transitive packages).
• Bumped GitHub Actions pins: Codecov, CodeQL, shivammathur/setup-php, softprops/action-gh-release.
• Raised Makefile PHPStan memory limit to 2G so local make lint matches CI and avoids OOM after tooling upgrades.

Fixed

• PHPUnit bootstrap defines WP_TESTS_PHPUNIT_POLYFILLS_PATH when the WordPress test suite loads Composer-installed PHPUnit polyfills.

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