Update tarantool/phpunit-extras requirement

Author: rybakit

composer.json

@@ -17,7 +17,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.14",
         "rybakit/msgpack": "^0.7",
-        "tarantool/phpunit-extras": "dev-master"
+        "tarantool/phpunit-extras": "^0.1"
     },
     "autoload": {
         "psr-4": {