Drop support for SF 5.4, lowest will now be 6.4

Author: veewee

composer.json

@@ -26,17 +26,17 @@
         "ondram/ci-detector": "^4.0",
         "psr/container": "^1.1 || ^2.0",
         "seld/jsonlint": "^1.8",
-        "symfony/config": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/console": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/dependency-injection": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/dotenv": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/event-dispatcher": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/expression-language": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/filesystem": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/finder": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/options-resolver": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/process": "^5.4 || ^6.0 || ^7.0 || ^8.0",
-        "symfony/yaml": "^5.4 || ^6.0 || ^7.0 || ^8.0"
+        "symfony/config": "^6.4 || ^7.0 || ^8.0",
+        "symfony/console": "^6.4 || ^7.0 || ^8.0",
+        "symfony/dependency-injection": "^6.4 || ^7.0 || ^8.0",
+        "symfony/dotenv": "^6.4 || ^7.0 || ^8.0",
+        "symfony/event-dispatcher": "^6.4 || ^7.0 || ^8.0",
+        "symfony/expression-language": "^6.4 || ^7.0 || ^8.0",
+        "symfony/filesystem": "^6.4 || ^7.0 || ^8.0",
+        "symfony/finder": "^6.4 || ^7.0 || ^8.0",
+        "symfony/options-resolver": "^6.4 || ^7.0 || ^8.0",
+        "symfony/process": "^6.4 || ^7.0 || ^8.0",
+        "symfony/yaml": "^6.4 || ^7.0 || ^8.0"
     },
     "require-dev": {
         "brianium/paratest": "^7.8",