Update NOTICE

NOTICE

@@ -1 +1,15 @@
 Copyright 2015 Heiko Seeberger
+
+Includes code from the following projects:
+
+Apache Pekko HTTP
+Copyright 2022-2025 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (https://www.apache.org/).
+
+This product contains significant parts that were originally based on software from Lightbend (Akka <https://akka.io/>).
+Copyright (C) 2009-2022 Lightbend Inc. <https://www.lightbend.com>
+
+Apache Pekko-HTTP is derived from Akka-HTTP 10.2.x, the last version that was distributed under the
+Apache License, Version 2.0 License.