Do not send 403 errors to Sentry in verification tag retrieval

Update verification tag retrieval tests to enhance error handling

• Modified the "handles 403 Forbidden error gracefully" test to throw an HttpClientError with a 403 status code.
• Updated the "handles 404 Not Found error" test to throw an HttpClientError with a 404 status code.
• Adjusted the "stops when token retrieval fails" test to throw an HttpClientError with a 500 status code and added an assertion to ensure Sentry.captureException is called.

Update PHP-CS-Fixer action in GitHub workflow

• Changed the PHP-CS-Fixer command from a direct run to using the PrestaShop GitHub Action for PHP-CS-Fixer.