ci: confirm 1.7

[chickenandpork]

DO NOT MERGE without rebase on merged #5

This PR confirms that jq-1.6 and jq-1.7 can both be pulled as configured; of note:

• we don't change the repository from stedolan to jqlang: likely GitHub is redirecting
• we don't map over the existing jq-osx-arm64 to jq-macos-arm64: both exist on 1.6/1.7, so no need yet
• linux-arm64 isn't currently handled; we'll need asset-name-magic then. That's a good time to changeover the macOS asset path

[nicowilliams]

You'll have to rebase. GH is not smart enough to realize that now only the head commit of this PR should be rebased and merged.

[nicowilliams]

• we don't change the repository from stedolan to jqlang: likely GitHub is redirecting

Yes, Stephen arranged for a redirect.

[nicowilliams]

Thanks!