fix: avoid shell injection when issue body contains single quotes in move-to-main-repo workflow

Agent-Logs-Url: https://github.com/community-scripts/ProxmoxVED/sessions/218a4dbe-5133-4ddf-a076-4b2a9db9dd45

Co-authored-by: MickLesk <47820557+MickLesk@users.noreply.github.com>

.github/workflows/move-to-main-repo.yaml

@@ -38,12 +38,13 @@ jobs:
         id: list_issues
         env:
           GH_TOKEN: ${{ github.token }}
+          ISSUE_JSON: ${{ toJson(github.event.issue) }}
         run: |
           echo "Resolving issue with label Migration To ProxmoxVE"
 
           if [[ "${{ github.event_name }}" == "issues" ]]; then
             # For labeled issue events, use the exact issue from event payload.
-            filtered_issue='${{ toJson(github.event.issue) }}'
+            filtered_issue="$ISSUE_JSON"
           else
             # Fallback for workflow_dispatch: query explicitly by label and raise limit.
             raw_output=$(gh issue list \