aGrUM/pyAgrum 2.1.1 released

ANNOUNCE: aGrUM 2.1.1

aGrUM/pyAgrum 2.1.1 is out.

Changelog for 2.1.1

• pyAgrum
• documentation (improved coverage and BN input/ouput mainly)
• now using ruff for formatting (and linting) python files (also in act guideline)