Bug: incorrect parameter serialization in ContentCreateRequest

[jeslopcru]

Issue Summary

It is not possible to create a Template with friendly name using PHP library version 8.3.4

Steps to Reproduce

1. Create a template using PHP library

                $sid = getenv("TWILIO_ACCOUNT_SID");
                $token = getenv("TWILIO_AUTH_TOKEN");
                $twilio = new Client($sid, $token);

                $twilio->content->v1->contents->create(
                    ContentModels::createContentCreateRequest(
                        [
                            'friendlyName' => 'my_template_friendly_name,
                            'language' => 'en',
                            'types' => [
                                'twilio/text' => [
                                    'body' => 'this is a example body,
                                ],
                            ],
                        ],
                    ),

2. When checking the template in Content Template Builder then friendly_name not provided appears as a name

Technical details:

• twilio-php version: 8.3.4
• php version: 8.3

Hints

I think that the problem is in ContentCreateRequest file because the serialization is with camelCase instead snake_case

problem

public function jsonSerialize(): array
    {
        return [
            'friendlyName' => $this->friendlyName,
            'variables' => $this->variables,
            'language' => $this->language,
            'types' => $this->types
        ];
    }

solution

public function jsonSerialize(): array
    {
        return [
            'friendly_name' => $this->friendlyName,
            'variables' => $this->variables,
            'language' => $this->language,
            'types' => $this->types
        ];
    }