Integrate gitlab-ci/cleaos-843-build-fails-on-chown
Commit: clea-os/infrastructure/gitlab-ci@b3dbba66
[BUILD] Improve cache directory preparation
chown -R frequently fails when temporary files disappear during
parallel builds, causing non-zero exits and random pipeline failures.
Replaced recursive chown with a find-based approach that updates
group ownership only for files and directories with an incorrect group.