Roll Packages from b9b6d38e012b to 5aef49b1c1d8 (2 revisions) (#141117)

https://github.com/flutter/packages/compare/b9b6d38e012b...5aef49b1c1d8

2024-01-06 ditman@gmail.com [ci] Revert #5793 + Manual flutter roll to c6ddb73f (flutter/packages#5812)
2024-01-05 goderbauer@google.com Enable prefer_mixin and bump plugin_platform_interface to 2.1.7 (flutter/packages#5793)

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.

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https://issues.skia.org/issues/new?component=1389291&template=1850622

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bin/internal/flutter_packages.version

-b9b6d38e012b0ac10746e58e17fee04ef83c1421
+5aef49b1c1d86ed35892aaeeb97d82a3fb3d843c