Support Symfony5

composer.json

@@ -47,17 +47,17 @@
         "simplesamlphp/assert": "^0.0.12",
         "simplesamlphp/saml2": "^4.1",
         "simplesamlphp/twig-configurable-i18n": "^2.1",
-        "symfony/cache": "^4.0",
-        "symfony/config": "^4.0",
-        "symfony/console": "^4.0",
-        "symfony/dependency-injection": "^4.0",
-        "symfony/finder": "^4.0",
-        "symfony/framework-bundle": "^4.0",
-        "symfony/http-foundation": "^4.0",
-        "symfony/http-kernel": "^4.0",
-        "symfony/routing": "^4.0",
+        "symfony/cache": "^4.0 || ^5.0",
+        "symfony/config": "^4.0 || ^5.0",
+        "symfony/console": "^4.0 || ^5.0",
+        "symfony/dependency-injection": "^4.0 || ^5.0",
+        "symfony/finder": "^4.0 || ^5.0",
+        "symfony/framework-bundle": "^4.0 || ^5.0",
+        "symfony/http-foundation": "^4.0 || ^5.0",
+        "symfony/http-kernel": "^4.0 || ^5.0",
+        "symfony/routing": "^4.0 || ^5.0",
         "symfony/var-exporter": "^5.0",
-        "symfony/yaml": "^4.0",
+        "symfony/yaml": "^4.0 || ^5.0",
         "twig/twig": "~2.0"
     },
     "require-dev": {