restore support for PHP8.0

Author: rvalitov

composer.json

@@ -19,11 +19,11 @@
         "php": ">=8.0",
         "ext-json": "*",
         "guzzlehttp/guzzle": "^6.3||^7.0",
-        "symfony/cache": "^6.3 || ^7.0",
-        "symfony/http-foundation": "^6.2 || ^7.0"
+        "symfony/cache": "^6.0 || ^6.3 || ^7.0",
+        "symfony/http-foundation": "^6.0 || ^6.2 || ^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^10.0.0",
+        "phpunit/phpunit": "^9.0.0 || ^10.0.0",
         "squizlabs/php_codesniffer": "^3.5.8"
     },
     "autoload": {