fix copyright

Author: tarzanek

opengrok-indexer/src/main/java/org/opengrok/indexer/search/context/Context.java

@@ -18,7 +18,7 @@
  */
 
 /*
- * Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2022, Oracle and/or its affiliates. All rights reserved.
  * Portions Copyright (c) 2011, Jens Elkner.
  * Portions Copyright (c) 2018, 2020, Chris Fraire <cfraire@me.com>.
  */