Regression baseline diff

Base origin/main against e05110d7a911. Blobs are served from https://baselines.climate-ref.org.

case versions image text netcdf other
esmvaltool/sea-ice-sensitivity/cmip6 v1 -> v2 ~4 +2~5-2
esmvaltool/sea-ice-sensitivity/cmip7 v1 -> v2 +4 +8