Merge pull request #5341 from DataDog/appsec-update-blocking-html-template

Update AppSec blocking HTML template

Author: y9v

lib/datadog/appsec/assets/blocked.html

@@ -100,7 +100,8 @@
     <footer>
         <p>Security provided by <a
                 href="https://www.datadoghq.com/product/security-platform/application-security-monitoring/"
-                target="_blank">Datadog</a></p>
+                target="_blank"
+                rel="noopener noreferrer">Datadog</a></p>
     </footer>
 </body>