Files that break between 26.1 and 26.2:
    "type" -> "minecraft:entity_type"
        data/rnt/enchantment/internal/place

Files that break between 1.21.8 and 1.21.9:
    pack_format
        pack.mcmeta

Files that break between 1.21.5 and 1.21.6:
    area_effect_cloud
    sth with paintings