Bump saml11-library

Author: tvdijen

composer.json

@@ -46,7 +46,7 @@
         "simplesamlphp/xml-soap": "~2.0",
         "symfony/http-foundation": "~7.4",
         "symfony/http-kernel": "~7.4",
-        "simplesamlphp/saml11": "~2.0"
+        "simplesamlphp/saml11": "~2.1"
     },
     "require-dev": {
         "simplesamlphp/simplesamlphp-test-framework": "~1.11"