Merged revision(s) 24384 from branches/OpenMPT-1.30:

[Imp] build: CI: GitHub: macOS: Add back configurations that use local dependencies in trunk for targeting old macOS versions, and use small dependencies instead.
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git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.28@24386 56274372-70c3-4bfc-bfc3-4c3a0b034d27

Author: manxorist