chore: update the year in the  NOTICE (#2726)

fix: https://github.com/apache/apisix-dashboard/issues/2724
diff --git a/NOTICE b/NOTICE
index 13e98eb..c663509 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
 Apache APISIX
-Copyright 2019-2022 The Apache Software Foundation
+Copyright 2019-2023 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).