FIX: Keep minctracc [skip ci] (#3175)

Fix recon-all failure found by @jbwexler.

Author: effigies

docker/files/freesurfer7.3.2-exclude.txt

@@ -802,7 +802,6 @@ freesurfer/mni/bin/mincreshape
 freesurfer/mni/bin/mincstats
 freesurfer/mni/bin/minctoecat
 freesurfer/mni/bin/minctoraw
-freesurfer/mni/bin/minctracc
 freesurfer/mni/bin/mincview
 freesurfer/mni/bin/mincwindow
 freesurfer/mni/bin/mnc2nii