User Enumeration possible on passwordReset endpoint

[acinader]

When posting to the requestPasswordReset endpoint, parse-server will return a

Parse.Error(Parse.Error.EMAIL_NOT_FOUND, `No user found with email ${email}.`);

A description of the issue can be found here: https://www.owasp.org/index.php/Testing_for_User_Enumeration_and_Guessable_User_Account_(OWASP-AT-002)