Change Local PHP Security Checker to composer audit

As https://github.com/fabpot/local-php-security-checker repository is archived and recommends using composer audit.

Author: ri

_posts/04-02-01-Composer-and-Packagist.md

@@ -86,7 +86,7 @@ that can monitor dependencies and send you alerts on updates.
 
 ### Checking your dependencies for security issues
 
-The [Local PHP Security Checker] is a command-line tool, which will examine your `composer.lock`
+Runnning `composer audit` command will examine your `composer.lock`
 file and tell you if you need to update any of your dependencies.
 
 ### Handling global dependencies with Composer
@@ -108,6 +108,5 @@ packages' binaries available everywhere, you'd then add the `~/.composer/vendor/
 [Packagist]: https://packagist.org/
 [Twig]: https://twig.symfony.com/
 [libraries.io]: https://libraries.io/
-[Local PHP Security Checker]: https://github.com/fabpot/local-php-security-checker
 [Learn about Composer]: https://getcomposer.org/doc/00-intro.md
 [ComposerSetup]: https://getcomposer.org/Composer-Setup.exe