.gitmodules: change submodule t upstream path
.gitmodules: change submodule t upstream path

Switch path for submodule t (Test-List-MoreUtils) from ssh based URI to
s-http based URI to allow anonymous checkouts.

Signed-off-by: Jens Rehsack <69d49c504a9219a55b8be0f905e8fe3c32ffb57f@netbsd.org>

perl5-utils/List-MoreUtils