MAGETWO-89569: Update composer/composer dependency

Author: danielrenaud

composer.json

@@ -40,15 +40,16 @@
         "colinmollenhour/cache-backend-redis": "1.10.4",
         "colinmollenhour/credis": "1.8.2",
         "colinmollenhour/php-redis-session-abstract": "~1.3.8",
-        "composer/composer": "~1.6.0",
-        "magento/composer": "1.3.0.x-dev",
+        "composer/composer": "^1.6",
         "elasticsearch/elasticsearch": "~2.0|~5.1",
+        "magento/composer": "1.3.0.x-dev",
         "magento/magento-composer-installer": ">=0.1.11",
         "magento/zendframework1": "dev-master",
         "monolog/monolog": "^1.17",
         "oyejorge/less.php": "~1.7.0",
         "pelago/emogrifier": "^2.0.0",
         "php-amqplib/php-amqplib": "2.5.*",
+        "phpseclib/mcrypt_compat": "1.0.4",
         "phpseclib/phpseclib": "2.0.*",
         "ramsey/uuid": "~3.7.3",
         "symfony/console": "~4.0.0",
@@ -83,8 +84,7 @@
         "zendframework/zend-text": "^2.6.0",
         "zendframework/zend-uri": "^2.5.1",
         "zendframework/zend-validator": "^2.6.0",
-        "zendframework/zend-view": "^2.8.1",
-        "phpseclib/mcrypt_compat": "1.0.4"
+        "zendframework/zend-view": "^2.8.1"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "~2.10.0",

composer.lock

@@ -23,7 +23,7 @@
         "ext-xsl": "*",
         "lib-libxml": "*",
         "colinmollenhour/php-redis-session-abstract": "~1.3.8",
-        "composer/composer": "~1.6.0",
+        "composer/composer": "^1.6",
         "magento/zendframework1": "~1.13.0",
         "monolog/monolog": "^1.17",
         "oyejorge/less.php": "~1.7.0",