Fix the issues reported by phpcs

I have fixed the errors and warnings. Please review the patch.

Hi @yashmalviya,

I reviewed your changes and confirmed the Patch was applied cleanly.

Checking patch src/Asset/CssCollectionRenderer.php...
Checking patch src/Form/SettingsForm.php...
Checking patch tests/src/Unit/CriticalCssProviderTest.php...
Applied patch src/Asset/CssCollectionRenderer.php cleanly.
Applied patch src/Form/SettingsForm.php cleanly.
Applied patch tests/src/Unit/CriticalCssProviderTest.php cleanly.

And all PHPCS errors have been fixed.

I ran this command:
phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml


Applied to Critical CSS module with 8.x-1.19 version and with the Drupal core version of 9.5.x.

Attaching screenshots and moving this to RTBC,

Thanks.

Hi,

Thanks for your patch, I've already merged it and will publish a new version in a couple of days.