Roll Packages from 6efb759 to 34948d1 (4 revisions) (flutter#173470)

flutter/packages@6efb759...34948d1

2025-08-07 stuartmorgan@google.com [video_player] Improve KVO handling
on iOS (flutter/packages#9718)
2025-08-07 49699333+dependabot[bot]@users.noreply.github.com
[dependabot]: Bump the test-dependencies group across 15 directories
with 7 updates (flutter/packages#9736)
2025-08-07 engine-flutter-autoroll@skia.org Roll Flutter from
9de63a0 to 92a6bfb (11 revisions) (flutter/packages#9769)
2025-08-07 20989940+aednlaxer@users.noreply.github.com
[google_maps_flutter_platform_interface] Add Advanced markers support
(flutter/packages#9737)

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 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

Author: engine-flutter-autoroll

bin/internal/flutter_packages.version

@@ -1 +1 @@
-6efb75994fc0fba58ccc37021a6bfd636494a13a
+34948d11297a5d1f54f67034afcfa5ff1456263f