Allow Symfony v6+

Author: 94noni

composer.json

@@ -20,12 +20,12 @@
     "require": {
         "php": ">=7.4",
         "spipu/html2pdf": "^5.2",
-        "symfony/dependency-injection": "^5.4",
-        "symfony/http-kernel": "^5.4"
+        "symfony/dependency-injection": "^5.4|^6.0",
+        "symfony/http-kernel": "^5.4|^6.0"
     },
     "require-dev": {
-        "symfony/framework-bundle": "^5.4",
-        "symfony/yaml": "^5.4"
+        "symfony/framework-bundle": "^5.4|^6.0",
+        "symfony/yaml": "^5.4|^6.0"
      },
     "autoload": {
         "psr-4": { "Noni\\Html2pdfBundle\\": "./" }