Fix proxy wait for response

[pedrosimeao-7egend]

Description

This PR includes 3 fixes:

1. Proxy was not waiting for response, so it didn't work
2. Proxy configuration requires optional ssl option
3. On parser error, the response status code was 200 (replaced to 500)

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Test Configuration:

{
    "target": "https://random-data-api.com/api/users/random_user",
    "followRedirects": false,
    "changeOrigin": true,
    "ignorePath": true
}

• OS: MacOS
• Node version: 20.11.0
• NPM Version: 10.2.4

Checklist:

• My code follows the guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• This does not break any existing functionalities
• Any dependent changes have been merged and published in downstream modules

[pedrosimeao-7egend]

@shubhendumadhukar any chance to get this into a new release?