Maytham Alsudany authored Jan 23, 2025 and Louis-Philippe Véronneau committed Mar 19, 2025

This commit adds the old `51 Franklin St, Fifth Floor, Boston, MA
02110-1301  USA` address of the Free Software Foundation to the
old-fsf-address-in-copyright-file check. It also changes the tag
description to recommend just referring to the GPL website rather than
any physical address.

The tests have been adjusted accordingly. Notably, the address has been
removed from the templates, and the copyright-file-general test has been
updated to test the presence all three addresses.

Closes: #1080497