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.