Update Flutter version
diff --git a/flutter-candidate.txt b/flutter-candidate.txt
index 5a8f757..4402ad3 100644
--- a/flutter-candidate.txt
+++ b/flutter-candidate.txt
@@ -1 +1 @@
-9d59b38b5755777570b861e93be1e7c7f9913027
+3.42.0-0.4.pre