Use previous run id to download artifact

Author: flufflycthu1u

.github/workflows/vartest.yml

@@ -24,12 +24,12 @@ jobs:
         run: |
           # Fetches the ID of the last completed run for the current workflow
           PREVIOUS_RUN_ID=$(gh run list --workflow "${{ github.workflow }}" --status completed --limit 1 --json databaseId --jq '.[0].databaseId')
-          echo "previous_run_id=$PREVIOUS_RUN_ID"
+          echo "previous_run_id=$PREVIOUS_RUN_ID" >> "$GITHUB_ENV"
       - name: Download test artifact
         uses: actions/download-artifact@v8
         with:
           skip-decompress: true
-          run-id: 24433840587
+          run-id: $previous_run_id
       - name: Display structure of downloaded files
         run: ls -R
       - name: Create test file