POST
    /group/participant-requests/reject
  
  curl \
 --request POST 'http://localhost:3000/group/participant-requests/reject' \
 --user "username:password" \
 --header "Content-Type: application/json" \
 --data '{"group_id":"120363024512399999@g.us","participants":["6281234567890"]}'
    
        Request examples
  
  {
  "group_id": "120363024512399999@g.us",
  "participants": [
    "6281234567890"
  ]
}
        Response examples (200)
  
  {
  "code": "SUCCESS",
  "message": "Success",
  "results": "string"
}
        Response examples (400)
  
  {
  "code": 400,
  "message": "field cannot be blank",
  "results": {}
}
        Response examples (500)
  
  {
  "code": "INTERNAL_SERVER_ERROR",
  "message": "you are not loggin",
  "results": {}
}