feat(ci): add condition for tag handling in CI pipeline

Includes a new condition in the CI pipeline to handle situations where 
the commit is a tag. This improves the robustness of the pipeline 
by ensuring that specific actions are only executed for tagged 
commits, thereby optimizing the release process.

Release.gitlab-ci.yml

@@ -185,6 +185,7 @@ unbound_release_prepare_release:
   - if: $CI_COMMIT_TAG == null && $CI_DEFAULT_BRANCH != $CI_COMMIT_BRANCH
     when: never
   - if: $CI_DEFAULT_BRANCH == $CI_COMMIT_BRANCH
+  - if: $CI_COMMIT_TAG
 
 unbound_release_create_release:
   stage: .pre