Version 3.0.0-417.2.beta

Change-Id: I0c9b8537ced69d1250027147c5bd1085ace0f035
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/296160
Commit-Queue: Alexander Thomas <athom@google.com>
Reviewed-by: William Hesse <whesse@google.com>
diff --git a/tools/VERSION b/tools/VERSION
index 08f0f16..ec4f062 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 0
 PATCH 0
 PRERELEASE 417
-PRERELEASE_PATCH 1
+PRERELEASE_PATCH 2