Integrate gitlab-ci/yt-160-gitlab-ci-integration-often-fails-on-merge-yocto-step

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Commit: seco-ne/yocto/infrastructure/gitlab-ci@ff906931

YT-160: Workaround to prevent CI integration failure in 'merge-yocto' step

  The GitLab CI integration job frequently fails on the 'merge-yocto' step,
  specifically at the "git fetch" stage.
  The issue occurs because Git fails to fetch the .gitlab-ci submodule
  due to an incorrect reference, likely caused by the shallow clone
  (--depth=1) configuration, which limits the commit history.

  Extending the clone depth to --depth=2 helps prevent this error
  by providing a slightly deeper commit history,
  which resolves the reference issue.