Update LICENSE

Updating LICENSE as per #2493

Signed-off-by: Ettore Di Giacinto <mudler@users.noreply.github.com>

LICENSE

@@ -175,3 +175,19 @@
       of your accepting any such warranty or additional liability.
 
    END OF TERMS AND CONDITIONS
+
+   Copyright 2021-2022 Ettore Di Giacinto <mudler@mudler.pm>
+   Copyright 2022-2024 Spectro Cloud
+   Copyright 2024 Kairos 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.