NEWS: Update Cisco copyright

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>

Author: jsquyres

NEWS

@@ -8,7 +8,7 @@ Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
                         University of Stuttgart.  All rights reserved.
 Copyright (c) 2004-2006 The Regents of the University of California.
                         All rights reserved.
-Copyright (c) 2006-2020 Cisco Systems, Inc.  All rights reserved.
+Copyright (c) 2006-2021 Cisco Systems, Inc.  All rights reserved.
 Copyright (c) 2006      Voltaire, Inc. All rights reserved.
 Copyright (c) 2006      Sun Microsystems, Inc.  All rights reserved.
                         Use is subject to license terms.