ci: fix macOS builds
Let's specify more of the dependencies explicitly. I suspect it was pkg-config that was missing; https://github.com/CZ-NIC/knot-resolver/actions/runs/4241689540/jobs/7372234570
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Let's specify more of the dependencies explicitly. I suspect it was pkg-config that was missing; https://github.com/CZ-NIC/knot-resolver/actions/runs/4241689540/jobs/7372234570