[issue9951] introduce bytes.hex method (also for bytearray and memoryview)

[Roundup Robot]

Roundup Robot added the comment:

New changeset 7f0811452d0f by Gregory P. Smith in branch 'default':
Switch binascii over to using the common _Py_strhex implementation for its hex
https://hg.python.org/cpython/rev/7f0811452d0f

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