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Summary
This PR upgrades py-spy to version 0.4.1.
Context
The previous version of py-spy had compatibility issues with Python 3.12, preventing pyroscope-io from properly attaching to subprocesses. As a result, only the main process was profiled, leading to incomplete performance data.
Fix
Version 0.4.1 addresses this issue, ensuring full support for profiling subprocesses under Python 3.12.
See the upstream issue for details: benfred/py-spy#726.