Roll Packages from b7fbe68d4ec2 to 611aea1657fb (4 revisions) (#145615)

https://github.com/flutter/packages/compare/b7fbe68d4ec2...611aea1657fb

2024-03-21 engine-flutter-autoroll@skia.org Roll Flutter from b96c13d1 to 18340ea1 (26 revisions) (flutter/packages#6370)
2024-03-21 engine-flutter-autoroll@skia.org Roll Flutter (stable) from ba3931984302 to 68bfaea22488 (2 revisions) (flutter/packages#6368)
2024-03-21 stuartmorgan@google.com [flutter_adaptive_scaffold] Remove broken link from README (flutter/packages#6364)
2024-03-21 38110731+aliasgar4558@users.noreply.github.com [adaptive_scaffold] : 🐛 : #110902 : Assertion added when try with less that 2 destinations. (flutter/packages#6360)

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

To file a bug in Flutter: 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

bin/internal/flutter_packages.version

-b7fbe68d4ec2105eb7b8e3a68ce3dfbabc5a72a6
+611aea1657fbfc0d2564a14b08e12dffc70189bb