fix: handle tag builds

Release.gitlab-ci.yml

@@ -158,7 +158,7 @@ unbound_release_prepare_release:
   rules:
   - if: $UNBOUND_RELEASE_TOKEN == null
     when: never
-  - if: $CI_DEFAULT_BRANCH != $CI_COMMIT_BRANCH
+  - if: $CI_COMMIT_TAG == null && $CI_DEFAULT_BRANCH != $CI_COMMIT_BRANCH
     when: never
   - if: '$CI_COMMIT_TITLE =~ /^chore\(release\): prepare for .*$/'
   - if: $CI_COMMIT_TAG && $UNBOUND_RELEASE_TAG_ONLY == "true"