Handling of outdated build dependencies

[Feliix42]

What should happen to outdated build dependencies? Should they be excluded from the badge?
@Enet4 correctly noted that issues with the build-time dependencies could in the worst case lead to secret credentials being leaked during the CI/CD workflow, so they may be relevant to some people.

As @robjtede suggested, we could make the inclusion of build dependencies in the badge opt-in, but the question would be how. You could use a GET parameter in the URL to enable/disable this but that would require some explanation from our end and may not be very intuitive to use. Example for this:

https://deps.rs/repo/github/deps-rs/deps.rs?build_deps=false

What do you guys think? How could a good solution work?