Fix an issue with MimeType guesser and latest release of "symfony/http-foundation"

Author: okolesnyk

composer.json

@@ -2,7 +2,7 @@
     "name": "magento/magento2-functional-testing-framework",
     "description": "Magento2 Functional Testing Framework",
     "type": "library",
-    "version": "2.6.3",
+    "version": "2.6.4",
     "license": "AGPL-3.0",
     "keywords": ["magento", "automation", "functional", "testing"],
     "config": {
@@ -11,22 +11,26 @@
     "require": {
         "php": "7.0.2||7.0.4||~7.0.6||~7.1.0||~7.2.0||~7.3.0",
         "ext-curl": "*",
+        "ext-dom": "*",
         "ext-json": "*",
         "ext-openssl": "*",
         "allure-framework/allure-codeception": "~1.3.0",
         "aws/aws-sdk-php": "^3.132",
         "codeception/codeception": "~2.4.5",
-        "composer/composer": "^1.4",
-        "consolidation/robo": "^1.0.0",
+        "composer/composer": "^1.6",
         "csharpru/vault-php": "~3.5.3",
         "csharpru/vault-php-guzzle6-transport": "^2.0",
         "flow/jsonpath": ">0.2",
         "fzaninotto/faker": "^1.6",
         "monolog/monolog": "^1.0",
         "mustache/mustache": "~2.5",
-        "symfony/process": "^2.8 || ^3.1 || ^4.0",
-        "vlucas/phpdotenv": "^2.4",
-        "php-webdriver/webdriver": "^1.8.0"
+        "php-webdriver/webdriver": "^1.8.0",
+        "symfony/console": "^4.4",
+        "symfony/finder": "^4.4",
+        "symfony/http-foundation": "^5.0",
+        "symfony/mime": "^5.0",
+        "symfony/process": "^4.4",
+        "vlucas/phpdotenv": "^2.4"
     },
     "require-dev": {
         "squizlabs/php_codesniffer": "~3.2",
@@ -52,7 +56,7 @@
         "files": ["src/Magento/FunctionalTestingFramework/_bootstrap.php"],
         "psr-4": {
             "Magento\\FunctionalTestingFramework\\": "src/Magento/FunctionalTestingFramework",
-            "MFTF\\": "dev/tests/functional/MFTF"
+            "MFTF\\": "dev/tests/functional/tests/MFTF"
         }
     },
     "autoload-dev": {