Add license information to roles/custom/matrix-synapse/vars/main.yml

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

roles/custom/matrix-synapse/vars/main.yml

@@ -1,3 +1,11 @@
+# SPDX-FileCopyrightText: 2019 - 2024 Slavi Pantaleev
+# SPDX-FileCopyrightText: 2022 Nikita Chernyi
+# SPDX-FileCopyrightText: 2023 Alexis Yushin
+# SPDX-FileCopyrightText: 2024 Charles Wright
+# SPDX-FileCopyrightText: 2024 Suguru Hirahara
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 ---
 
 matrix_synapse_client_api_url_endpoint_public: "{{ 'https' if matrix_playbook_ssl_enabled else 'http' }}://{{ matrix_server_fqn_matrix }}/_matrix/client/versions"