Update composer.json

Author: yatsenkolesh

composer.json

@@ -11,7 +11,7 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "yatsenkolesh/php-curlasync": "^0.0.3"
+        "yatsenkolesh/php-curlasync": "^0.0.8"
     },
      "autoload": {
         "psr-4":  {"Async\\": "src/"}