fix: add missing closing parenthesis in process_queue Python extraction

Fixes #142 - process_queue silently skips all queue items because
issue_ref and message Python extraction commands were missing a closing
parenthesis. The error was silently swallowed by 2>/dev/null causing
both variables to be empty, so every queue item was skipped.

skills/kugetsu/scripts/kugetsu

@@ -1389,8 +1389,8 @@ process_queue() {
         fi
         
         local queue_id=$(basename "$item" .json)
-        local issue_ref=$(python3 -c "import json; print(json.load(open('$item')).get('issue_ref', '')" 2>/dev/null)
+        local issue_ref=$(python3 -c "import json; print(json.load(open('$item')).get('issue_ref', ''))" 2>/dev/null)
-        local message=$(python3 -c "import json; print(json.load(open('$item')).get('message', '')" 2>/dev/null)
+        local message=$(python3 -c "import json; print(json.load(open('$item')).get('message', ''))" 2>/dev/null)
         
         if [ -z "$issue_ref" ] || [ -z "$message" ]; then
             continue