fix: add tag existence check in release workflow

- Check if tag already exists before creating it
- Skip tag creation if tag already exists

.gitea/workflows/release.yml

@@ -91,8 +91,14 @@ jobs:
         run: |
           TAG_NAME="v${{ steps.version.outputs.new_version }}"
           echo "Creating tag $TAG_NAME"
-          git tag -a "$TAG_NAME" -m "Release $TAG_NAME"
+          
-          git push origin "$TAG_NAME"
+          # Check if tag already exists
+          if git rev-parse "$TAG_NAME" >/dev/null 2>&1; then
+            echo "Tag $TAG_NAME already exists, skipping tag creation"
+          else
+            git tag -a "$TAG_NAME" -m "Release $TAG_NAME"
+            git push origin "$TAG_NAME"
+          fi
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3