Merge branch 'cleanup/macos-gitignore' into 'master'

Christoph Grüningerrequested to merge
cherry-pick-84cd3055 into releases/2.8

[gitignore] Ignore macOS caching files

See merge request !439 (merged)

(cherry picked from commit 84cd3055)

d417844c [gitignore] Ignore macOS caching files

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