Update headers

Author: marcprux

Sources/SkipNotify/SkipNotify.swift

@@ -1,2 +1,5 @@
+// Copyright 2023–2025 Skip
+// SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
+
 public class SkipNotifyModule {
 }

Tests/SkipNotifyTests/SkipNotifyTests.swift

@@ -1,3 +1,5 @@
+// Copyright 2023–2025 Skip
+// SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 import XCTest
 import OSLog
 import Foundation

Tests/SkipNotifyTests/XCSkipTests.swift

@@ -1,8 +1,5 @@
-// Copyright 2023 Skip
-//
-// This is free software: you can redistribute and/or modify it
-// under the terms of the GNU Lesser General Public License 3.0
-// as published by the Free Software Foundation https://fsf.org
+// Copyright 2023–2025 Skip
+// SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 #if os(macOS)
 import SkipTest