[FIX] Pin scipy for the conda failing CI's

[skoudoro]

All in the Title.

Our Conda CI's are failing due to cvxpy version we have to pin scipy.

Supersed #2890

[codecov]

Codecov Report

Merging #2906 (9bbdda0) into master (f30d96d) will increase coverage by 0.18%.
Report is 59 commits behind head on master.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2906      +/-   ##
==========================================
+ Coverage   81.43%   81.61%   +0.18%     
==========================================
  Files         145      146       +1     
  Lines       20132    20363     +231     
  Branches     3214     3224      +10     
==========================================
+ Hits        16394    16619     +225     
- Misses       2922     2924       +2     
- Partials      816      820       +4     

Files	Coverage Δ
dipy/reconst/dti.py	92.57% <100.00%> (+0.01%)	⬆️

... and 5 files with indirect coverage changes

[skoudoro]

ok, this is strange, all the dependencies are the same as https://github.com/dipy/dipy/actions/runs/5747080622/job/15577531014#step:6:59 which should be all greens but one CI's matrix is still failing.

still investigating... and if I do not find the reason, I will handle this error:

FAILED reconst/tests/test_dti.py::test_restore - numpy.linalg.LinAlgError: Eigenvalues did not converge

[skoudoro]

Yeah! All green, this is ready to go @arokem. Feel free to check and merge it when you can. Thanks

[arokem]

Nice work!