[deps] rev core

Revisions updated by `dart tools/rev_sdk_deps.dart`.

core (https://github.com/dart-lang/core/compare/1156cfe..6af0821):
  6af0821d  2024-11-07  Devon Carew  add links to the package issue trackers (dart-lang/core#720)

Change-Id: I29a8a64b81a3159dc2ca7dd8d07056bc7c0061ce
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/394402
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Devon Carew <devoncarew@google.com>

DEPS

@@ -120,7 +120,7 @@ vars = {
   # EOL comment after a dependency to disable this and pin it at its current
   # revision.
 
-  "core_rev": "1156cfe4abc000f173bbf826783c215ca02b2ebf",
+  "core_rev": "6af0821dd8c0ecc5c30d5e67b3c8e16e8d79cda6",
   # Note: Updates to dart_style have to be coordinated with the infrastructure
   # team so that the internal formatter `tools/sdks/dart-sdk/bin/dart format`
   # matches the version here. Please follow this process to make updates:

pkg/dtd/CHANGELOG.md

@@ -1,4 +1,7 @@
+## 2.3.1-wip
+
 ## 2.3.0
+
 - Indicate compatibility with `package:web_socket_channel` 2.x and 3.x.
 - Bump minimum version for `package:unified_analytics` to 6.1.0.
 - `DartToolingDaemon.connect` will now wait for the web socket to be connected.
@@ -15,10 +18,12 @@
   prior to calling `streamListen` to avoid the possibility of missing events.
 
 ## 2.2.0
+
 - Added new response types `Success`, `StringResponse`, `BoolResponse`, and `StringListResponse`.
 - Added contributing guide (`CONTRIBUTING.md`).
 
 ## 2.1.0
+
 - Added `getProjectRoots` API.
 - Expose constant values from `dtd.dart`.