CHANGELOG: move indexed_db change to 2.17

Didn't make 2.16 release

Follow-up to https://dart-review.googlesource.com/c/sdk/+/226180
and 4e28e2f21eccad6e9f63666f759365d7bb6093bc

Change-Id: Ia56060fc0198fae01c27b97230b8fc6202e738ac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/227583
Auto-Submit: Kevin Moore <kevmoo@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7428a56..b72adbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@
 - Add `Finalizer` and `WeakReference` which can potentially detect when
   objects are "garbage collected".
 
+#### `dart:indexed_db`
+
+- `IdbFactory.supportsDatabaseNames` has been deprecated. It will always return
+  `false`.
+
 ## 2.16.0
 
 ### Core libraries
@@ -17,11 +22,6 @@
   error with an existing stack trace, instead of creating
   a new stack trace.
 
-#### `dart:indexed_db`
-
-- `IdbFactory.supportsDatabaseNames` has been deprecated. It will always return
-  `false`.
-
 #### `dart:io`
 
 - **Breaking Change** [#47653](https://github.com/dart-lang/sdk/issues/47653):