[dart_internal] Support 2.18

Change-Id: Iea0fb68809ad7b45795f87116cb3c38ccf6f5f9d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/240543
Auto-Submit: Alexander Thomas <athom@google.com>
Reviewed-by: Kevin Moore <kevmoo@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>

Author: athomas

pkg/dart_internal/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.2.5
+
+- Support the latest Dart SDK.
+
 ## 0.2.4
 
 - Support the latest Dart SDK.

pkg/dart_internal/pubspec.yaml

@@ -1,5 +1,5 @@
 name: dart_internal
-version: 0.2.4
+version: 0.2.5
 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 @@ description: >-
 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 <2.18.0"
+  sdk: ">=2.12.0 <2.19.0"