[YUNIKORN-989] Update copyright years in NOTICE file to 2022 (#67)

Closes: #67
diff --git a/NOTICE b/NOTICE
index 94d7938..8e0bc3c 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,5 +1,5 @@
 Apache YuniKorn (Incubating)
-Copyright 2019-2021 The Apache Software Foundation
+Copyright 2019-2022 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).