Drop support for Symfony 5 due to incompatibility with monolog 3

Author: lruozzi9

composer.json

@@ -14,16 +14,16 @@
     ],
     "require": {
         "php": "^8.1",
-        "symfony/config": "^5.4|^6.4|^7.0",
-        "symfony/console": "^5.4|^6.4|^7.0",
-        "symfony/dependency-injection": "^5.4|^6.4|^7.0",
-        "symfony/event-dispatcher": "^5.4|^6.4|^7.0",
-        "symfony/http-kernel": "^5.4|^6.4|^7.0",
+        "symfony/config": "^6.4|^7.0",
+        "symfony/console": "^6.4|^7.0",
+        "symfony/dependency-injection": "^6.4|^7.0",
+        "symfony/event-dispatcher": "^6.4|^7.0",
+        "symfony/http-kernel": "^6.4|^7.0",
         "monolog/monolog": "^3.0"
     },
     "require-dev": {
         "matthiasnoback/symfony-dependency-injection-test": "^4.3|^5.1",
-        "symfony/framework-bundle": "^5.4|^6.4|^7.0",
+        "symfony/framework-bundle": "^6.4|^7.0",
         "symfony/phpunit-bridge": "^5.3|^6.0|^7.0",
         "twig/twig": "^1.32|^2.4|^3.0",
         "symfony/monolog-bundle": "^3.10"