**Undocumented:** Submits a logged-in user's security challenge answers to trust the current IP.

Seen in the official launcher & minecraft.net XHR.

@param {Object} session - object from authentication
@param {string} session.accessToken - valid access token for the user's account
@param {Array} answers - list of answers like `[{id, answer}]`
@returns {Promise} resolves if location was secured
@example
const challenges = await getChallenges(session)
const answers = await Promise.all(challenges.map(async c => {
const answer = await prompt(c.question.question)
return {id: c.answer.id, answer}
}))
await answerChallenges(session, answers) // might throw
await isSecure(session) // true if successful
function answerChallenges ({accessToken}, answers) {
  return fetch(`${CORE_API}/user/security/location`, {
    method: 'POST',
    body: JSON.stringify(answers), // TODO some kind of format verification?
    headers: {
      'user-agent': USER_AGENT,
      'authorization': `Bearer ${accessToken}`,
      'content-type': 'application/json'
    }
  })
    .then(handleErrors)
    .then(res => null)
}