Bump dealerdirect/phpcodesniffer-composer-installer from 0.5.0 to 0.6.0

Bumps [dealerdirect/phpcodesniffer-composer-installer](https://github.com/Dealerdirect/phpcodesniffer-composer-installer) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/Dealerdirect/phpcodesniffer-composer-installer/releases)
- [Commits](PHPCSStandards/composer-installer@v0.5.0...v0.6.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.json

@@ -15,7 +15,7 @@
       "phpunit/phpunit": "~8.4",
       "wp-cli/wp-cli": "~2.4",
       "wp-coding-standards/wpcs": "~2.2",
-      "dealerdirect/phpcodesniffer-composer-installer": "^0.5.0",
+      "dealerdirect/phpcodesniffer-composer-installer": "^0.6.0",
       "php-coveralls/php-coveralls": "*",
       "squizlabs/php_codesniffer": "~3.5"
     },