transformers

cb7e1664 - t5: add conversion script for T5X to FLAX (#16853)

t5: add conversion script for T5X to FLAX (#16853) * t5: add conversion script for T5X to FLAX * t5: make flake happy * t5: add copyright message to t5x conversion script * t5: fix lm head for v1.0 checkpoints