Use modern PHPUnit attributes

Prefer modern PHPUnit attributes over PHPDoc annotations for improved type safety, IDE support, and code readability in tests. Replace legacy annotation-style test decorators with their attribute counterparts:

• Use #[DataProvider] for test data organization: ```php #[DataProvider(‘provideStrSanitizeTestStrings’)] public function testSanitize(?string $subject, ?string $expected, ?HtmlSanitizerConfig $config) { $this->assertSame($expected, Str::sanitize($subject, $config)); }

public static function provideStrSanitizeTestStrings() { return [ ‘non-empty string is returned as is’ => [‘Hello’, ‘Hello’, null], ‘XSS attack is sanitized’ => [‘’, ‘’, null], // more test cases… ]; }

- Use `#[RequiresPhp('8.4.0')]` or similar attributes instead of manual version checks:
```php
// Instead of:
if (PHP_VERSION_ID < 80400) {
    $this->markTestSkipped('Property Hooks are not available to test in PHP...');
}

// Use:
#[RequiresPhp('8.4.0')]
class DatabaseEloquentWithPropertyHooksTest extends TestCase
{
    // Test methods...
}

• For simpler test data cases, consider #[TestWith]:

  #[TestWith(['Hello', 'Hello', null])]
  #[TestWith([123, '123', null])]
  #[TestWith([null, null, null])]
  public function testSanitize(?string $subject, ?string $expected, ?HtmlSanitizerConfig $config)
  {
    $this->assertSame($expected, Str::sanitize($subject, $config));
  }
  

This approach improves code maintainability, provides better type hinting to IDEs, and follows modern PHP testing practices.