bpo-36543: Revert "bpo-36543: Remove the xml.etree.cElementTree module." (GH-20117) (GH-20780)

* Revert "bpo-36543: Remove the xml.etree.cElementTree module. (GH-19108)"

This reverts commit b33e52511a59c6da7132c226b7f7489b092a33eb.
(cherry picked from commit ec88e1bca81a167e6d5c0ac635e22f84298cb1df)
5 files changed