Support Python 3.12

[dicknetherlands]

O365 seems to work fine on Python 3.12 but one dependency - stringcase - is throwing warnings (stringcase.py:247: SyntaxWarning: invalid escape sequence '\W').

Could O365 be officially updated to support 3.12, and in doing so update/modify the stringcase dependency to stop throwing this warning?

I realise the warning itself is from the stringcase project but it looks like stringcase might be an orphan/abandonded project and hasn't been updated in a while, so perhaps O365 could replace it with something else when upgrading to Python 3.12?

[alejcas]

Dropped stringcase dependency

Done in df0bf8c

2.0.36 released into pypi