Log Message:
py-ciso8601: updated to 2.3.0

Version 2.3.0

* Added Python 3.11 support
* Fix the build for PyPy2
* Added missing `fromutc` implementation for `FixedOffset`.
* Removed improper ability to call `FixedOffset`'s `dst`, `tzname` and \ 
`utcoffset` without arguments
* Fixed: `datetime.tzname` returns a `str` in Python 2.7, not a `unicode`
* Change `METH_VARARGS` to `METH_O`, enhancing performance.
* Added support for ISO week dates,
* Added support for ordinal dates