Fix(pynn-brainscales): Enforce correct log4cxx version
The production env seems to use a newer spack repo state → log4cxx is newer than currently supported for BrainScaleS → quickfix: pin to old version.
(cherry picked from commit fa396948)
The production env seems to use a newer spack repo state → log4cxx is newer than currently supported for BrainScaleS → quickfix: pin to old version.
(cherry picked from commit fa396948)
merged
mentioned in commit e74172e1