fix(ci): improve version checking in the CI pipeline

Update the version checking logic in the CI pipeline to ensure that 
the script correctly identifies the latest tag. The change checks 
if the latest tag is available before comparing it with the 
VERSION file, improving reliability in determining if a version 
bump is necessary.

Release.gitlab-ci.yml

@@ -52,7 +52,8 @@ unbound_release_handle_mr:
   - 'apk add --no-cache git jq curl'
   script:
   - |
-    if [[ "$(cat VERSION)" == "$(git describe --abbrev=0 --tags)" ]]; then
+    LATEST="$(git describe --abbrev=0 --tags 2>/dev/null)"
+    if [[ -n "${LATEST}" && "$(cat VERSION)" == "${LATEST}" ]]; then
       echo "No changes worthy of a version bump"
       exit 0
     fi