Fetches a quest by its ID

curl --request GET \
  --url https://api.drip.re/api/v4/quests/realms/{id}/quests/{quest_id} \
  --header 'Authorization: Bearer <token>'

{
  "conditions": [
    {
      "has_fulfilled": [
        123
      ],
      "req_text": "<string>",
      "type": "<string>",
      "value": "<any>"
    }
  ],
  "link": "<string>",
  "type": "<string>"
}