Feature freeze for Python 3.15 as first beta released

The Python team has released the first beta of version 3.15, with new features including a stable application binary interface (ABI) for free-threaded CPython, lazy imports to speed startup time, a new zero-overhead sampling profiler, use of UTF-8 text encoding by default, and a faster just-in-time (JIT) compiler. Python's development cycle bars new features after the first beta release. There is typically a new feature release in October each year, with version 3.15 currently scheduled for Octo