Fix symfony/http-client PHP version compatibility

Broaden symfony/http-client constraint from ^7.3 to ^6.4 || ^7.0
to support PHP 8.1, as symfony/http-client 7.3+ requires PHP 8.2+.

Author: parsilver

composer.json

@@ -16,7 +16,7 @@
         "phpstan/phpstan-deprecation-rules": "^1.0",
         "phpstan/phpstan-phpunit": "^1.0",
         "spatie/ray": "^1.28",
-        "symfony/http-client": "^7.3"
+        "symfony/http-client": "^6.4 || ^7.0"
     },
     "autoload": {
         "psr-4": {