Upgrade biblatex version to 3.18 or 3.19?

[grunweg]

It seems tectonic 0.15 uses biblatex 3.17: this was released two years ago (according to the manual, page 348). How much work would it be to update the biblatex version coming with tectonic?

One data point: debian stable (which is generally more conservative) uses biblatex 3.18; debian testing (which is used by more rolling-edge distros like ubuntu) uses biblatex 3.19. Both would work fine for my purposes, any is better than the current status quo.

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This is related to #893; I understand that the general issue is complicated. I am not asking for a general solution here. Instead, upgrading the biblatex version would side-step this for my purposes.

Thank you for creating tectonic, by the way! I would love to use this more; the above issue is my main blocker.

[rm-dr]

If this is an issue with our tex package versions (and not our bibtex version), this might be resolved once #1121 is merged and we release a new resource bundle.