[gitignore] Ignore macOS caching files

changed milestone to %DUNE 2.8.0

assigned to @gruenich

added 3 commits

• 563c7b01...c3262f2d - 2 commits from branch master
• d417844c - [gitignore] Ignore macOS caching files

Compare with previous version

enabled an automatic merge when the pipeline for d417844c succeeds

merged

mentioned in commit 84cd3055

picked the changes into the branch cherry-pick-84cd3055 with commit f3d9e5ce

mentioned in commit f3d9e5ce

mentioned in merge request !441 (merged)