Broken MCR module on CI machines

[AliceJoubert]

Changing to clinica standalone set-up in CI with #1486 seems to have broken our non-regression tests : see https://github.com/aramis-lab/clinica/actions/workflows/test_non_regression_fast.yml

Before :

Loading clinica.all
  Loading requirement: clinica/ants/2.4.4 clinica/freesurfer/6.0.0
    clinica/fsl/6.0.5 clinica/itk/4.13.0 clinica/mrtrix3/3.0.3
    clinica/matlab/2017a clinica/spm12/r7771

Now :

Loading clinica_standalone.all
  Loading requirement: clinica/ants/2.4.4 clinica/freesurfer/6.0.0
    clinica/fsl/6.0.5 clinica/itk/4.13.0 clinica/mrtrix3/3.0.3 clinica/MCR/2018b
    clinica/spm12_standalone/2018b

It seems to have messed up with the paths :

antsRegistration: /mnt/third-party/MCR/2018b/v95/sys/os/glnxa64/libstdc++.so.6: version `GLIBCXX_3.4.26' not found (required by antsRegistration)

[NicolasGensollen]

Yes, I saw that this morning. I'm not sure what's wrong with the MCR module. It was created a long time ago by Mauricio and I don't even know if it worked once. The easiest way forward might be to recompile the module.
Thanks for opening the issue. 👍

[NicolasGensollen]

I changed the title to be more specific to the task that needs to be done.

Since this might require some work, I'm gonna restore the previous usage of SPM + Matlab on CI such that we don't have the tests failing consistently in the mean time.

[github-actions]

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