New path for the IAM user. Include this parameter only if you’re changing the user’s path.
This parameter allows (through its [regex pattern]) a string of characters consisting of either a forward slash (/) by itself or a string that must begin and end with forward slashes. In addition, it can contain any ASCII character from the ! (‘u0021`) through the DEL character (`u007F`), including most punctuation characters, digits, and upper and lowercased letters.
[1]: wikipedia.org/wiki/regex