Changes
- [AB#1302] Fix document export failing at strike-through text (bdd0d656)
- [AB#1303] Fix empty annex fields marked as invalid even when optional (bdd0d656)

Full changelog: https://gitlab.opencode.de/rthiele/evb-it-digital/-/compare/1.5.3..1.5.4

Side note: This release was tagged retroactively on 2025-02-23, while the original date of commit bdd0d656 was 2024-06-18.