Update baipp & download artifacts #757

Job	Run time
Build docs & run doctests	28s
Check types using pyright	26s
Verify dev env (ubuntu-latest)	17s
Tests & Mypy on 3.7	46s
Verify dev env (windows-latest)	49s
Tests & Mypy on 3.8	1m 11s
Tests & Mypy on 3.9	1m 10s
Tests & Mypy on 3.10	1m 18s
Tests & Mypy on 3.11	1m 7s
Tests & Mypy on 3.12	1m 38s
Tests & Mypy on pypy-3.8	56s
Tests & Mypy on pypy-3.9	51s
Tests & Mypy on pypy-3.10	1m 3s
Combine & check coverage.	11s
required-checks-pass	3s
	12m 14s

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