How to find all packaged procedures that have argument(s) of a specific data type?

This task is quite trivial if you know the right data dictionary to use.
Let’s say we need to see all procedures that has DATE arguments:

SELECT package_name, object_name AS procedure_name, argument_name, data_type
FROM user_arguments a
WHERE data_type='DATE'
  AND package_name IS NOT NULL
ORDER BY 1,2,3
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