Roll Packages from d642322f51b5 to 7a7912faa4dd (8 revisions) (#192119)

https://github.com/flutter/packages/compare/d642322f51b5...7a7912faa4dd

2026-09-01 21270878+elliette@users.noreply.github.com [material_ui]
Migrate AppBar M3 template to use new gen_defaults script
(flutter/packages#12707)
2026-09-01 32538273+ValentinVignal@users.noreply.github.com
[vector_graphics] Fix deprecation lints (flutter/packages#12702)
2026-08-31 21270878+elliette@users.noreply.github.com [material_ui]
Standardize M3 and M3E token template base class names
(flutter/packages#12675)
2026-08-31 32538273+ValentinVignal@users.noreply.github.com
[vector_graphics_compiler] Fix deprecation issues in tests
(flutter/packages#12700)
2026-08-31 stuartmorgan@google.com [google_maps_flutter] Convert marker
controllers to Swift (flutter/packages#12662)
2026-08-31 jmccandless@google.com [material_ui, cupertino_ui, go_router]
Command to test dart fixes (flutter/packages#12390)
2026-08-31 engine-flutter-autoroll@skia.org Roll Flutter from
c97838627ff5 to c8c5e3bd7542 (4 revisions) (flutter/packages#12706)
2026-08-31 269567208+reidbaker-agent@users.noreply.github.com [tool]
Exempt AGENTS.md from version and changelog checks
(flutter/packages#12681)

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
diff --git a/bin/internal/flutter_packages.version b/bin/internal/flutter_packages.version
index 96384b2..be2d05f 100644
--- a/bin/internal/flutter_packages.version
+++ b/bin/internal/flutter_packages.version
@@ -1 +1 @@
-d642322f51b592deeb7b3b4e99b6e63bc8ce40e1
+7a7912faa4ddfa1a3f0a2106e48f3a20a2521001