Update python-papermill to version 2.6.0 / rev 15 via SR 1187313
https://build.opensuse.org/request/show/1187313
by user bnavigator + anag+factory
- Update to 2.6.0
* bring back strip_color and remove ANSI color codes from
exception traceback #791
* cleaned up documentation #790
* prevent error override, fix traceback type #788
* Upgrade tests to moto v5 #779
* raise PapermillExecutionError when CellExecutionError is raised
without cell error output #786
* make progress_bar param accept a dict #778
* Fix nbformat to 5.2.0 to cell None type #770
* Use f-strings where possible #762
* Unmark wheel as universal #764
- Drop papermill-pr779-moto5.patch