Python 3.12

[dflook]

Adds Python 3.12 support

• [x] Type parameter syntax
• [x] Add type parameter syntax property tests
• [ ] Add type parameter scoping rules
• [ ] Update renamer for new nodes
• [x] Implement pep701 f-strings
• [x] Add 3.12 xtest manifest
• [ ] Add type parameter removal transform
• [x] Resolve deprecation warnings
• [ ] Update changelog