Copyright for golang-pty source package in Focal

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

Files: *
Copyright: 2011 Keith Rarick
License: Expat
 Copyright (c) 2011 Keith Rarick
 .
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated
 documentation files (the "Software"), to deal in the
 Software without restriction, including without limitation
 the rights to use, copy, modify, merge, publish, distribute,
 sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so,
 subject to the following conditions:
 .
 The above copyright notice and this permission notice shall
 be included in all copies or substantial portions of the
 Software.
 .
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
 KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Files: debian/*
Copyright: 2013 Daniel Mizyrycki 
           2012 Michael Stapelberg 
License: GPL-2+
 This package is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation; either version 2 of the License, or (at your option) any later
 version.
 .
 This package 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 General Public License for more details.
 .
 You should have received a copy of the GNU General Public License along with
 this program. If not, see 
 .
 On Debian systems, the complete text of the GNU General Public License
 version 2 can be found in "/usr/share/common-licenses/GPL-2".