5121549 Roll Dart SDK from e655b9a3839e to b58cfe5ab24e (1 revision) (flutter/engine#21920)

engine-flutter-autoroll · engine-flutter-autoroll · commit 78b7725e22fd · 2020-10-16T23:19:34.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-eba7a1c90d37f8a23d20a5540821b1cc2215ac90
+512154980616ff62f2e66e73cbbec2a7dc4a313f
