aa21eaf Roll Dart SDK from e5b2cb0b02ae to acb552d056be (1 revision) (flutter/engine#18817)

engine-flutter-autoroll · engine-flutter-autoroll · commit 12e900979bf1 · 2020-06-04T17:12:45.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-cde417ffbe1d91f4afd1989fd4b2c3f4b99e1d83
+aa21eaf97f29ff4f3290c871c78d386da47522cd
