The mailman2 server running on lists.linuxfoundation.org will be shut
down in very imminent future. Update all instances of obsolete list
addresses throughout the tree with their new destinations.

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240214-lf-org-list-migration-v1-1-ef1eab4b1543@linuxfoundation.org