Merge v8 pre-release changelogs into one 8.0.0 changelog (#4066)

* merge changelog entries of pre releases

* modify changelog

* Update CHANGELOG.md

Co-authored-by: Lukas Bloder <[email protected]>

* review changes

* update changelog

* add auto ip change

* use previous self hosted version since we are no longer using is_exception_group

* more review comments

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Co-authored-by: Lukas Bloder <[email protected]>

Author: adinauer