Update .github/workflows/semver.yml

Author: Not-Nik

.github/workflows/semver.yml

@@ -31,7 +31,12 @@ jobs:
       - name: Get latest tag
         id: tag
         run: |
-          echo "ref=$(git tag --sort=-creatordate | head -n 1)" >> "$GITHUB_OUTPUT"
+          TAG=$(git tag --sort=-version:refname | head -n 1)
+          if [ -z "$TAG" ]; then
+            echo "::error::No tags found; cannot determine semver baseline"
+            exit 1
+          fi
+          echo "ref=$TAG" >> "$GITHUB_OUTPUT"
 
       - uses: mozilla/actions/nss@25cb84d060946c0ad6d2c3f79da479b16d180d71 # v1.1.0
         with: