Fix copyright year

Bernhard Scholz · Bernhard Scholz · commit 02311b171599 · 2022-03-17T20:21:58.000+11:00
diff --git a/tests/interface/pathseq/CMakeLists.txt b/tests/interface/pathseq/CMakeLists.txt
@@ -1,5 +1,5 @@
 # Souffle - A Datalog Compiler
-# Copyright (c) 2021 The Souffle Developers. All rights reserved
+# Copyright (c) 2022 The Souffle Developers. All rights reserved
 # Licensed under the Universal Permissive License v 1.0 as shown at:
 # - https://opensource.org/licenses/UPL
 # - <souffle root>/licenses/SOUFFLE-UPL.txt
