Modernize type inference tests

Author: ondrejmirtes

composer.json

@@ -15,7 +15,7 @@
   "require": {
     "php": "^7.1 || ^8.0",
     "ext-simplexml": "*",
-    "phpstan/phpstan": "^0.12.83"
+    "phpstan/phpstan": "^0.12.85"
   },
   "conflict": {
     "symfony/framework-bundle": "<3.0"
@@ -26,12 +26,12 @@
     "phpstan/phpstan-phpunit": "^0.12.16",
     "phpstan/phpstan-strict-rules": "^0.12.5",
     "phpunit/phpunit": "^7.5.20",
-    "symfony/console": "^4.0",
-    "symfony/config": "^4.2",
-    "symfony/framework-bundle": "^4.0",
-    "symfony/http-foundation": "^4.0",
-    "symfony/messenger": "^4.2",
-    "symfony/serializer": "^4.0"
+    "symfony/console": "^4.0 || ^5.0",
+    "symfony/config": "^4.2 || ^5.0",
+    "symfony/framework-bundle": "^4.0 || ^5.0",
+    "symfony/http-foundation": "^4.0 || ^5.0",
+    "symfony/messenger": "^4.2 || ^5.0",
+    "symfony/serializer": "^4.0 || ^5.0"
   },
   "config": {
     "platform": {