Log Message:
py-ICU: updated to 2.13.1

Version 2.13 -> 2.13.1
----------------------
- change c++11 to c++17 in setup.py as current versions of ICU require it

Version 2.12 -> 2.13
--------------------
- fixed build issues on Windows
- added wrappers for MeasureUnit(locale, width) and getUnitDisplayName()
- added wrappers for DateFormatSymbols.getEra|ZodiacNames()
- added wrappers for DateFormatSymbols.getZoneStrings()
- added wrappers for LocaleDisplayNames
- fixed bug dealloc calling wrong destructor on most types (Fredrik Roubert)
- added support for ICU 75.1
- added wrappers for LocalizedNumber|Range|Formatter.withoutLocale()
- added wrappers for UIdentifierType, Char.hasIDType(), Char.getIDTypes()
- added wrappers for UIdentifierStatus
- added wrappers for UProperty.IDENTIFIER_TYPE, UProperty.IDENTIFIER_STATUS