Bump assert-lib

Author: tvdijen

composer.json

@@ -37,7 +37,7 @@
         "php": "^8.3",
 
         "league/oauth1-client": "^1.11",
-        "simplesamlphp/assert": "^1.9",
+        "simplesamlphp/assert": "^2.0",
         "simplesamlphp/simplesamlphp": "^2.5@dev",
         "symfony/http-foundation": "^7.4"
     },