Roll Dart SDK from f138e58bcf6d to 34cd2b4b56dd (2 revisions) (flutter#175017)

https://dart.googlesource.com/sdk.git/+log/f138e58bcf6d..34cd2b4b56dd

2025-09-06 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.10.0-179.0.dev
2025-09-05 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com
Version 3.10.0-178.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter
Please CC aaclarke@google.com,dart-vm-team@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

DEPS

@@ -56,13 +56,13 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'f138e58bcf6dee690e620c7e94eec5563249e1cf',
+  'dart_revision': '34cd2b4b56ddba2a34f0ee110c6f8fde032968ba',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
   'dart_ai_rev': '1547a834d8a3bb021f2e6c49c41d5aaad11a5b7f',
   'dart_binaryen_rev': '1d2e23d5e55788091a51420ba3a9889d4efe7509',
-  'dart_boringssl_rev': '739613d2e62bd6ab3e7378bf70a5767b50e3c4bf',
+  'dart_boringssl_rev': '40e035a9e5d721b3b7c15c46259d782ffe7d9e96',
   'dart_core_rev': '5c3e2c38df268be2347f3aad30ced0147dd012bb',
   'dart_devtools_rev': '5e1792245005088a0a0dfe28f207bd22045ba783',
   'dart_ecosystem_rev': '36e514d52c5d056227e4cea98b784ade50b5b4f1',