Copyright for libportal source package in Kinetic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: libportal
Source: https://github.com/flatpak/libportal

Files: *
Copyright:
 2018-2019 Matthias Clasen
 2019 Patrick Griffis
 2020 Jan Grulich
 2021 Georges Basile Stavracas Neto
 2021 GNOME Foundation
License: LGPL-3 and LGPL-2.1+

Files: debian/*
Copyright:
 2019-2021 Collabora Ltd.
 2019-2021 Simon McVittie
License: LGPL-2.1+

License: LGPL-2.1+
 SPDX-License-Identifier: LGPL-2.1-or-later
 .
 This library is free software; you can redistribute it and/or modify it
 under the terms of the GNU Lesser General Public License as published
 by the Free Software Foundation; either version 2.1 of the License, or
 (at your option) any later version.
 .
 This library is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 License for more details.
 .
 On Debian systems, the text of the LGPL version 2.1 can be found in
 .

License: LGPL-3
 SPDX-License-Identifier: LGPL-3.0-only
 .
 This file is free software; you can redistribute it and/or modify it
 under the terms of the GNU Lesser General Public License as
 published by the Free Software Foundation, version 3.0 of the
 License.
 .
 This file is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 .
 On Debian systems, the text of the LGPL version 3 can be found in
 .