perf: Bumping Python dependency to 3.11.0 for perf and date util support
This commit updates the version of Python that donate-neo runs on from 3.9 to 3.11. Python 3.11 boasts a notable improvement to performance over Python 3.9: https://docs.python.org/release/3.11.0/whatsnew/3.11.html#whatsnew311-faster-cpython
Additionally, this version of Python contains improvements to datetime
parsing which will be helpful in handling incoming webhook requests.