Update dependencies to support Laravel 5.6

Author: lancepioch

composer.json

@@ -19,12 +19,12 @@
         "aws/aws-sdk-php": "^3.48",
         "cakephp/chronos": "^1.1",
         "doctrine/dbal": "^2.5",
-        "fideloper/proxy": "^3.3",
+        "fideloper/proxy": "^4.0",
         "guzzlehttp/guzzle": "^6.3",
         "hashids/hashids": "^2.0",
         "igaster/laravel-theme": "^2.0.6",
         "laracasts/utilities": "^3.0",
-        "laravel/framework": "5.5.*",
+        "laravel/framework": "5.6.*",
         "laravel/tinker": "^1.0",
         "lord/laroute": "^2.4",
         "matriphe/iso-639": "^1.2",
@@ -35,8 +35,8 @@
         "prologue/alerts": "^0.4",
         "ramsey/uuid": "^3.7",
         "s1lentium/iptools": "^1.1",
-        "sofa/eloquence-base": "v5.5",
-        "sofa/eloquence-validable": "v5.5",
+        "sofa/eloquence-base": "v5.6",
+        "sofa/eloquence-validable": "v5.6",
         "spatie/laravel-fractal": "^5.3",
         "webmozart/assert": "^1.2",
         "znck/belongs-to-through": "^2.3"
@@ -49,8 +49,9 @@
         "friendsofphp/php-cs-fixer": "^2.11.1",
         "fzaninotto/faker": "^1.6",
         "mockery/mockery": "^1.0",
+        "nunomaduro/collision": "^2.0",
         "php-mock/php-mock-phpunit": "^2.1",
-        "phpunit/phpunit": "~6.4.0"
+        "phpunit/phpunit": "~7.0"
     },
     "autoload": {
         "classmap": [