chore(vendor/psutil): set py_limited_api for posix extension (#15549)

## Description

This lets us use the same .so file across different python versions. 

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## Testing

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## Risks

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## Additional Notes

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Author: taegyunkim

ddtrace/vendor/psutil/setup.py

@@ -645,6 +645,9 @@ def adapt_extension(original_ext, new_name):
             define_macros=macros,
             libraries=[],
         )
+        # Copy py_limited_api from the main extension for consistency
+        if hasattr(ext, "py_limited_api"):
+            posix_ext.py_limited_api = ext.py_limited_api
 
         # Add platform-specific libraries for posix extension
         if SUNOS: