Revert removing Symfony LTS versions from available versions. (#258)

* Don't drop for LTS symfony versions for no reason.

* Add support for all current symfony LTS versions.

* Make sure validate-prefer-lowest test passes.

* Make sure validate-prefer-lowest test passes.

composer.json

@@ -28,15 +28,15 @@
         "google/protobuf": "^3.20.1",
         "grpc/grpc": "^1.34",
         "nesbot/carbon": "^2.52.0",
-        "psr/log": "^2.0 || ^3.0",
+        "psr/log": "^1.0.1 || ^2.0 || ^3.0",
         "react/promise": "^2.8",
         "spiral/attributes": "^2.7 || ^3.0",
         "spiral/roadrunner-cli": "^2.2",
         "spiral/roadrunner-kv": "^2.1 || ^3.0",
         "spiral/roadrunner-worker": "^2.1.3",
-        "symfony/filesystem": "^6.0",
-        "symfony/http-client": "^6.0",
-        "symfony/process": "^6.0"
+        "symfony/filesystem": "^4.4.20 || ^5.0 || ^6.0",
+        "symfony/http-client": "^4.4.20 || ^5.0 || ^6.0",
+        "symfony/process": "^4.4.20 || ^5.0 || ^6.0"
     },
     "autoload": {
         "psr-4": {