Fix charts find command

.drone.yml

@@ -15,7 +15,7 @@ steps:
     commands:
       - mkdir -p charts/dist
       # Find all versioned chart directories
-      - ALL_CHARTS=$(find charts -maxdepth 2 -type d -regex ".*/v[0-9]+\.[0-9]+\.[0-9]+")
+      - "ALL_CHARTS=`find charts -maxdepth 2 -type d -regex '.*/v[0-9]+\.[0-9]+\.[0-9]+'`"
       - "echo \"Detected charts: $ALL_CHARTS\""
       - if [ -n "$ALL_CHARTS" ]; then echo "$ALL_CHARTS" | xargs -I {} helm package {} --destination charts/dist; else echo "No charts found in repository"; exit 1; fi
       # Debug: List packaged files