save json in a temporary file

.gitea/actions/discover-skins/action.yml

@@ -70,7 +70,11 @@ runs:
 
         elif [[ -n "$target_skins" ]]; then
           echo "→ Target skins specified. Using target_skins input…"
-          mapfile -t skins < <(echo "$target_skins" | jq -r '.[]')
+          # Use a temporary file to safely handle special characters
+          temp_target_file="/tmp/target_skins_$RANDOM.json"
+          printf '%s' "$target_skins" > "$temp_target_file"
+          mapfile -t skins < <(jq -r '.[]' "$temp_target_file")
+          rm -f "$temp_target_file"
           echo "    ✓ Found ${#skins[@]} skin(s) from target_skins input"
 
         else