Integrate gitlab-ci/cleaos-697-fix-release-generation-if-sdk-deploy-fails

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Commit: clea-os/infrastructure/gitlab-ci@f0e9efad

[CICD][RELEASE] Fix release page generation when SDK job is skipped

  If SDK files are not generated, the board release page generation fails
  due to missing (undefined) variables.
  This commit fixes the issue by checking whether the variable containing
  the SDK file name is defined before usage.

  Also correct the changelog URL used in DevOps build.