Bump minimum PHP-version to 8.3, start testing on PHP 8.5 and bump dependencies

Author: tvdijen

composer.json

@@ -40,14 +40,14 @@
     "require": {
         "php": "^8.3",
 
-        "simplesamlphp/assert": "^1.9",
-        "simplesamlphp/composer-module-installer": "^1.5",
-        "simplesamlphp/simplesamlphp": "^2.5@dev",
-        "simplesamlphp/simplesamlphp-module-consent": "^1.5",
+        "simplesamlphp/assert": "~2.0",
+        "simplesamlphp/composer-module-installer": "~1.7",
+        "simplesamlphp/simplesamlphp": "~2.5@dev",
+        "simplesamlphp/simplesamlphp-module-consent": "~1.5",
         "symfony/http-foundation": "^7.4"
     },
     "require-dev": {
-        "simplesamlphp/simplesamlphp-test-framework": "^1.11"
+        "simplesamlphp/simplesamlphp-test-framework": "~1.11"
     },
     "extra": {
         "ssp-mixedcase-module-name": "consentAdmin"