Composite GHA actions in `.github/actions` are excluded from dependency checks/upgrades

[finalfantasia]

I'm not sure if this is by design but due to the filtering logic for GHA workflows, any composite actions are excluded from dependency checks/upgrades.

It would be great if antq could handle such GHA actions so that their dependencies can also be checked/upgraded automatically.

Thank you!

[liquidz]

@finalfantasia Thanks for your request! I missed the composite action. I'll have a look later :)