Changes the password for a specified user in a user pool.
See https://www.paws-r-sdk.com/docs/cognitoidentityprovider_change_password/ for full documentation.
cognitoidentityprovider_change_password(
PreviousPassword,
ProposedPassword,
AccessToken
)
[required] The old password.
[required] The new password.
[required] A valid access token that Amazon Cognito issued to the user whose password you want to change.