Update git hash for flutter/devtools

[b-luk]

Fixes failing Dart to Flutter autoroller.

Failure log

| Analyzing devtools_app...
|
| warning - test/shared/eval_integration_test.dart:123:43 - A value of type 'Object?' can't be returned by the 'onError' handler because it must be assignable to 'FutureOr<FutureFailedException>', as required by 'Future.then'. - invalid_return_type_for_then
|
| 1 issue found.

Caused by a new analyzer warning: https://dart-review.googlesource.com/c/sdk/+/498240

eval_integration_test.dart was updated 2 weeks ago to fix the problematic line.

This updates the git hash used for flutter/devtools customer testing to incorporate this change.