4.1.0

• Remove last dependency on six (#1250)
• Use platformdirs instead of the appsdirs dependency (#1244)
• Pass digest method when signing timestamp node(#1201)
• Fix settings context manager when an exception is raised (#1193)
• Don't render decimals using scientific notation (#1191)
• Remove dependency on defusedxml (deprecated) (#1179)
• Improve handling of str values for Duration (#1165)