Fix ASTC link error on Mac arm64 hardware

[jherico]

Description

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Fixes #965

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[tomadamatkinson]

Hey @jherico i wouldnt take my CI commit just yet. Had some issues with the matrix syntax. The commit you have currently wont work

[tomadamatkinson]

Can confirm this change fixes the compile errors on M1

Thank you very much for this prompt fix

[SaschaWillems]

LGTM. Thank you very much for fixing this.