Roll Dart SDK from 0aa5b0f019b9 to 594434d5a0b5 (2 revisions) (#20354)

https://dart.googlesource.com/external/github.com/flutter/engine/+/e01f910fce4b4b0b9caa9894f2fdc2b3147523ef
1 file changed
tree: 3064780b8596af491b40f192b71b967ec292226a
  1. commits.json