CI: bump GHC 9.6 to 9.6.4 and actions/cache to v4#257

Merged

andreasabel merged 1 commit intomasterfrom ci-9.6.4

Jan 28, 2024

+13-20

Commits on Jan 27, 2024

CI: bump GHC 9.6 to 9.6.4 and actions/cache to v4
andreasabel
committed