Fix message_set.dart copyright year (#912)

osa1 · web-flow · commit f085bfdc4e74 · 2024-02-20T20:06:50.000+01:00
The file was added in 2023, but the header was copied from another file
with date 2011. Fix the date.
diff --git a/protobuf/lib/src/protobuf/message_set.dart b/protobuf/lib/src/protobuf/message_set.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file`
	`1`	`+// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file`
`2`	`2`	`// for details. All rights reserved. Use of this source code is governed by a`
`3`	`3`	`// BSD-style license that can be found in the LICENSE file.`
`4`	`4`