Added instructions for downgrading MSYS2's Python to v3.12.12, and fo… #3133

Job	Run time
Static Analysis	13s
Build package	11s
Build package	4s
Call ci unit tests workflow / Run tests (3.11)	2m 53s
Call ci unit tests workflow / Run tests (3.12)	2m 59s
Call ci unit tests workflow / Run tests (3.10)	2m 59s
	9m 19s

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