Allow action to continue if previous artifact is expired

Author: flufflycthu1u

.github/workflows/vartest.yml

@@ -36,6 +36,7 @@ jobs:
           skip-decompress: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
           run-id: ${{ steps.get_id.outputs.previous_run_id }}
+        continue-on-error: true
       - name: Display structure of downloaded files
         run: ls -R
       - name: Create test file