fix: add events stanza

Author: lukasmrtvy

.github/workflows/nginx.conf-test.yaml

@@ -15,5 +15,10 @@ jobs:
         uses: actions/checkout@v5
       - name: Test Nginx configuration
         run: |
-          echo "http { include 'nginx.conf'; }" > default.conf
+          cat > default.conf <<EOF
+          http {
+            include 'nginx.conf';
+          }
+          events {}
+          EOF
           nginx -t -c $(pwd)/default.conf