tests(action): test commenting report

.github/workflows/build-test-ci.yaml

@@ -53,7 +53,7 @@ jobs:
           echo "test failed with status $status"
           exit $status
         fi
-        docker exec nlqs-tests bash -c "cat /code/tests/report_url.txt"
+        docker exec nlqs-tests bash -c "cat /code/tests/report_url.txt" >> $GITHUB_OUTPUT
 
     - name: Comment on PR
       uses: actions/github-script@v6
@@ -64,7 +64,7 @@ jobs:
             issue_number: context.issue.number,
             owner: context.repo.owner,
             repo: context.repo.repo,
-            body: process.env.TEST_OUTPUT
+            body: process.env.GITHUB_OUTPUT
           })`