[3.9] bpo-37751: Document codecs.lookup() change in What's New in Python 3.9 (GH-23096)#25659

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vstinner merged 1 commit intopython:3.9from

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Apr 27, 2021

Commits on Apr 27, 2021

bpo-37751: Document codecs.lookup() change in What's New in Python 3.9 (GH-23096)

shihai1991
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miss-islington
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