2b7fe4e1de
Salsa-CI's lintian stage flagged the pre-existing boilerplate paragraph in debian/copyright as 'old-fsf-address-in-copyright- file' when cleanups first hit CI. Replace the '51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA' literal with a 'https://www.gnu.org/licenses/' reference; the /usr/share/common-licenses/LGPL-2.1 reference a few lines later is unchanged, so license-text location is still covered. Pushed to salsa and gitea as commit f31c57a on branch cleanups and as standalone topic debian/copyright-fsf-address on gitea.