Update scrollbar for hover events (#90636)

https://dart.googlesource.com/external/github.com/flutter/flutter/+/610ca324c3f6edba7104f2013f0c8464af1d29af
diff --git a/commits.json b/commits.json
index 0087aa5..d8bcbff 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"a81cab02eb37312ea6c0fd437590ff9ee97f8797",
-  "external/github.com/flutter/flutter":"126370fba92e97f6a55b20d5ff03520260822b62",
+  "external/github.com/flutter/flutter":"610ca324c3f6edba7104f2013f0c8464af1d29af",
   "sdk":"4daa1ed20635582575bc2324143b97e904724400"
 }
\ No newline at end of file