Makes 1.8 textures packs compatible with 1.20
Ensure the folder is unzipped. Make a copy if you want to keep the original version.
Some of the particles may be slightly scuffed, you will also need to name these manually once they've been converted. Follow the naming convention below.
big_smoke_0, big_smoke_1, big_smoke_2...
splash_0, splash_1, splash_2...
bubble, hook
flame, lava
note, critical_hit, enchanted_hit
heart, angry, glint

drip_fall, drip_hang, drip_land
effect_0, effect_1, effect_2...
spell_0, spell_1, spell_2...
spark_0, spark_1, spark_2...
Image for reference