Uplift scipy version restriction and restrict tsfresh>=0.21.0

[johannes-mueller]

Fix #155, follow blue-yonder/tsfresh#1097

[johannes-mueller]

@maierbn scipy-1.15.2 does no longer report an optimization failure for one of the four failure cases for the beta calculation. What do we do with this?

[maierbn]

but it does for the other three? Then I would say we just keep it as it is.

[johannes-mueller]

For P_A = 1.0 it now finds beta = -10.378464316310737 It fails for P_A = 1.0 + 1e-15. I would suggest to drop the 1.0 case or replace it with something like 1.01