There's nothing sensitive, therefore there is no reason to use TLS.
“You only need encryption for the sensitive stuff” is what we did, poorly, in the late ‘00s / early ‘10s, and it was rightfully proven to be a bad idea. There’s a reason why browsers treat HTTP the way they currently do, and it isn’t because they’ve been co-opted by Big Certificate Authority.
EDIT: and as the other commenter says, there are download links.
Which IMO has been a huge mistake since breaking caching proxies for networks because we want to prove authenticity and have to do secrecy as well has been quite silly.