chore: adopt SPDX license headers for files added in master

application/src/test/java/org/thingsboard/server/transport/lwm2m/client/LwM2mTestObject.java

@@ -1,18 +1,5 @@
-/**
- * Copyright © 2016-2026 The Thingsboard Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// SPDX-FileCopyrightText: Copyright The Thingsboard Authors
+// SPDX-License-Identifier: Apache-2.0
 package org.thingsboard.server.transport.lwm2m.client;
 
 import org.eclipse.leshan.client.resource.SimpleInstanceEnabler;