Version 3.0.0-290.2.beta

Change-Id: Iad3be5dc05edf7991fb54a1cbf27509e0bdb09e9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/288549
Reviewed-by: Jonas Termansen <sortie@google.com>
Commit-Queue: Jonas Termansen <sortie@google.com>
diff --git a/tools/VERSION b/tools/VERSION
index 08dab87..401c292 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 0
 PATCH 0
 PRERELEASE 290
-PRERELEASE_PATCH 1
+PRERELEASE_PATCH 2