Changes to Update an entitlement set

added the pattern ^(?!\s)(?!.*\s$)[^\p{Cc}\p{Cf}\p{Zl}\p{Zp}]+$ to the request property displayName

added the pattern ^(?!\s)(?![\s\S]*\s$)(?:[^\p{Cc}\p{Cf}\p{Zl}\p{Zp}]|[\t\n\r])+$ to the request property description

endpoint added