I can't update Mautic to V4.4.0

[Henry17888]

I installed Mautic with V4.3.1, and the PHP version is 7.4.
Today I got a notification that I can update to V4.4.0. Then I update via composer according to https://docs.mautic.org/en/setup/how-to-install-mautic/install-and-manage-mautic-with-composer#updating-mautic-core
$composer update mautic/core-lib --with-dependencies Do not run Composer as root/super user! See https://getcomposer.org/root for details Continue as root/super user [yes]? y Loading composer repositorUpdating dependencies Nothing to modify in lock file Installing dependencies from lock file (including require-dev) Nothing to install, update or remove Package lightsaml/lightsaml is abandoned, you should avoid using it. Use litesaml/lightsaml instead. Package misd/phone-number-bundle is abandoned, you should avoid using it. Use odolbeau/phone-number-bundle instead. Package swiftmailer/swiftmailer is abandoned, you should avoid using it. Use symfony/mailer instead. Package symfony/debug is abandoned, you should avoid using it. Use symfony/error-handler instead. Package symfony/inflector is abandoned, you should avoid using it. Use EnglishInflector from the String component instead. Package symfony/swiftmailer-bundle is abandoned, you should avoid using it. Use symfony/mailer instead. Generating autoload files 109 packages you are using are looking for funding. Use the composer fundcommand to find out more! Symfony recipes are disabled: "symfony/flex" not found in the root composer.json
Then I check on my website, it's still V4.3.1.
And I also tried composer update, nothing happen.
Am I something wrong? Please kindly help.
Thank you.