fix: types.RequestResponse url field UnmarshalJSON bug

[LazyMaple]

Proposed changes

In Go, when you use map[string]json.RawMessage to parse JSON data, the fields retain their original JSON-encoded format. json.RawMessage is essentially a []byte that contains the raw encoded JSON data. This means that if the JSON field is a string, it will include the quotation marks (").
Here’s a quick example to illustrate the situation:

package main

import (
    "encoding/json"
    "fmt"
)

func main() {
    data := `{"url": "testphp.vulnweb.com"}`

    var m map[string]json.RawMessage
    err := json.Unmarshal([]byte(data), &m)
    if err != nil {
        fmt.Println(err)
        return
    }

    // Printing the raw message byte array
    fmt.Printf("RawMessage in bytes: %v\n", m["url"])

    // Decode the "url" field
    var url string
    err = json.Unmarshal(m["url"], &url)
    if err != nil {
        fmt.Println(err)
        return
    }

    fmt.Printf("Original RawMessage: %s\n", string(m["url"]))
    fmt.Printf("Parsed URL: %s\n", url)
}

When you run this program, the output will be:

RawMessage in bytes: [34 116 101 115 116 112 104 112 46 118 117 108 110 119 101 98 46 99 111 109 34]
Original RawMessage: "testphp.vulnweb.com"
Parsed URL: testphp.vulnweb.com

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[GeorginaReeder]

Thanks for your contribution @LazyMaple , we appreciate it!

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[tarunKoyalwar]

lgtm !