Bug#1004206: libconfig-model-dpkg-perl: update-my-copyright-year duplicates single year

[Dominique Dumont]

On Saturday, 22 January 2022 19:30:05 CET you wrote:
> -Copyright: 2022, gregor herrmann <gre...@debian.org>
> +Copyright: 2022, 2022, gregor herrmann <gre...@debian.org>

I can't believe I missed this simple test case ...

Thanks for the report.

Dod