MQE-1988: MFTF failures after PHP upgrade (libzip5 v1.60+)

moved facebook/webdriver to replace
added php-webdriver/webdriver

Author: soumyau

composer.json

@@ -26,7 +26,7 @@
         "mustache/mustache": "~2.5",
         "symfony/process": "^2.8 || ^3.1 || ^4.0",
         "vlucas/phpdotenv": "^2.4",
-        "php-webdriver/webdriver": "1.8.x-dev"
+        "php-webdriver/webdriver": "1.8.0"
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "~3.2",