Set Dart version to git hash 3166bbf24b0c929eef33fd5d0f69e0f36a9009f3 (Dart 2.3.3-dev) (#9292)

* Update Dart to git hash 3166bbf24b0c929eef33fd5d0f69e0f36a9009f3
which is the Dart revision 2.3.3-dev-0.0

* Fix license file.

DEPS

@@ -31,7 +31,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'b37aa3b03650c60ab47b78b2163382d889ecb5df',
+  'dart_revision': '3166bbf24b0c929eef33fd5d0f69e0f36a9009f3',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: c2e7f27b8eadaee49b86e4f60c9b28e3
+Signature: 249b5d598312923f9f21198204ef2e4f
 
 UNUSED LICENSES: