Update Copyrights and Python version

Issue-ID: OAM-414
Change-Id: Ice252759d75eaf799d71660c22a45d27a91f41d7
Signed-off-by: Martin Skorupski <martin.skorupski@highstreet-technologies.com>
diff --git a/code/network-generator/tests/test_countries.py b/code/network-generator/tests/test_countries.py
index 94d9f7d..32b13a7 100644
--- a/code/network-generator/tests/test_countries.py
+++ b/code/network-generator/tests/test_countries.py
@@ -1,4 +1,4 @@
-# Copyright 2023 highstreet technologies GmbH
+# Copyright 2024 highstreet technologies
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.