Copyright for python-lib25519 source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: python-lib25519
Source: https://github.com/janmojzis/python-lib25519

Files: *
Copyright: © 2023, Jan Mojžíš 
License: CC0-1.0

License: CC0-1.0
 CC0 1.0 Universal
 .
 The complete text of the CC0 license, version 1.0,
 can be found in /usr/share/common-licenses/CC0-1.0.