Update druidfi/php-fpm Docker tag to v8.4.11

Author: renovate[bot]

misc/saml-idp/Dockerfile

@@ -11,7 +11,7 @@ RUN tar xzf /tmp/simplesamlphp.tar.gz -C /tmp
 RUN mv /tmp/simplesamlphp-* /home/simplesamlphp
 RUN rm -rf /home/simplesamlphp/modules/cron /home/simplesamlphp/modules/multiauth
 
-FROM druidfi/php-fpm:8.4.7 AS final
+FROM druidfi/php-fpm:8.4.11 AS final
 
 USER root