update olena to include https://gitlab.lrde.epita.fr/olena/olena/-/merge_requests/4

[kba]

@bertsky Feel free to extend and/or merge as you see fit.

[bertsky]

The CI failure speaks of the need to update our reference data as well: data/scribo-test/data/OCR-D-IMG-BIN-SAUVOLA-MS-FG/OCR-D-SEG-PAGE-SAUVOLA-MS-FG-orig_tiff-BIN_sauvola-ms-fg.png should now be generated with --all-k 0.34 in effect (instead of the previous result which silently used --k2 0.2 --k3 0.3 --k4 0.5).

(I know: this does decrease the quality for this algorithm even further. But this is not a good time to discuss a good way to wrap the different parameterizations. If we want to have control over k for all impl, we must accept that the k2/k3/k4 difference will disappear.)

[bertsky]

@kba after you merged OCR-D/assets#72 we can update repo/assets here.

[kba]

@kba after you merged OCR-D/assets#72 we can update repo/assets here.

Done.

[bertsky]

Thumbs crossed!