chore(composer): Update composer-fixer to composer-updater

- Renamed `composer-fixer` to `composer-updater` in `.php-cs-fixer.php`
- Updated the file references accordingly
- Updated the composer packages using the new `composer-updater` script

Author: guanguans

.php-cs-fixer.php

@@ -34,7 +34,7 @@
     ])
     ->append(glob(__DIR__.'/{*,.*}.php', GLOB_BRACE))
     ->append([
-        __DIR__.'/composer-fixer',
+        __DIR__.'/composer-updater',
     ])
     ->notPath([
         'bootstrap/*',