Fix misc warnings

• operations on bitsets are better that manual iteration over the bits, and do not produce a warning
• std::ignore allows to assign "anything" without a warning
• Python deprecated Py_SetProgramName() in version 3.11

changed milestone to %DUNE 2.11.0

added cleanup label

added 55 commits

• d8d45d9f...3c52924b - 54 commits from branch master
• 4ba0fea2 - Fix misc warnings

Compare with previous version

requested review from @oliver.sander

assigned to @santiago.ospina

added 26 commits

• 4ba0fea2...e9c88282 - 25 commits from branch master
• a8540b94 - Fix misc warnings

Compare with previous version

enabled an automatic merge when all merge checks for a8540b94 pass

merged

mentioned in commit da91b334