[pbs-devel] [PATCH proxmox-backup] docs: update copyright years

[Dietmar Maurer]

> i wonder whether it's worth following curl's example on this and just
> get rid of the years [1]. seems needlessly tedious to maintain…
> 
> [1]: https://daniel.haxx.se/blog/2023/01/08/copyright-without-years/

Quote form that text:

> We own the copyrights no matter if the years are stated or not.

It is easy to claim such things, but is there some reliable proof?