Roll Dart SDK from bd12fd1 to 61abd53 (1 revision)

https://dart.googlesource.com/sdk.git/+log/bd12fd10dd93..61abd53ede59

2022-05-24 dart-internal-sdk-dev-roller@dart-ci-internal.iam.gserviceaccount.com Version 2.18.0-148.0.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-engine
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -45,7 +45,7 @@ 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': 'bd12fd10dd934103aad4eb2fc79473f60db95083',
+  'dart_revision': '61abd53ede59bd07814db71cb87106657c314939',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -218,7 +218,7 @@ deps = {
    Var('dart_git') + '/csslib.git@518761b166974537f334dbf264e7f56cb157a96a',
 
   'src/third_party/dart/third_party/pkg/dartdoc':
-   Var('dart_git') + '/dartdoc.git@c58f21042ebd95014c5426a2f34411876685ecc7',
+   Var('dart_git') + '/dartdoc.git@8549817bb1b59808108e83ef0e513157cb572d2a',
 
   'src/third_party/dart/third_party/pkg/ffi':
    Var('dart_git') + '/ffi.git@0c8364a728cfe4e4ba859c53b99d56b3dbe3add4',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: c0e7ba294e6937b2420d676ff6bcbafd
+Signature: d859d1be20be1de35aaef2bd6fa54bf0
 
 UNUSED LICENSES: