[3.13] gh-133009: fix UAF in xml.etree.ElementTree.Element.__deepcopy__ (GH-133010)
#133806
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…__` (pythonGH-133010) (cherry picked from commit 116a9f9) Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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(cherry picked from commit 116a9f9)
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
xml.etree.ElementTree.Element.__deepcopy__when concurrent mutations happen #133009