Update dart_internal to allow SDK 2.17.

Change-Id: Ic3295690f9f4cf2d0a84cfbba59b7cd107c22f4f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/230000
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
diff --git a/pkg/dart_internal/pubspec.yaml b/pkg/dart_internal/pubspec.yaml
index 9d5dacc..244171e 100644
--- a/pkg/dart_internal/pubspec.yaml
+++ b/pkg/dart_internal/pubspec.yaml
@@ -1,5 +1,5 @@
 name: dart_internal
-version: 0.2.3
+version: 0.2.4
 repository: https://github.com/dart-lang/sdk/tree/master/pkg/dart_internal
 description: >-
   This package is not intended for wide use. It provides a temporary API to
@@ -9,4 +9,4 @@
 environment:
   # Restrict the upper bound so that we can remove support for this in a later
   # version of the SDK without it being a breaking change.
-  sdk: ">=2.12.0 <2.17.0"
+  sdk: ">=2.12.0 <2.18.0"