Roll Flutter (stable) from 603104015dd6 to dec2ee5c1f98 (4 revisions) (#8084)

https://github.com/flutter/flutter/compare/603104015dd6...dec2ee5c1f98

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-stable-packages
Please CC dit@google.com,stuartmorgan@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter (stable): https://github.com/flutter/flutter/issues/new/choose
To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
diff --git a/.ci/flutter_stable.version b/.ci/flutter_stable.version
index a4fc971..7b7e72b 100644
--- a/.ci/flutter_stable.version
+++ b/.ci/flutter_stable.version
@@ -1 +1 @@
-603104015dd692ea3403755b55d07813d5cf8965
+dec2ee5c1f98f8e84a7d5380c05eb8a3d0a81668