add missing lock file

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "8ad5cb7acc1115a77404d1be899984ac",
+    "content-hash": "210685bb4ecd91f015682f5cf03ba84d",
     "packages": [
         {
             "name": "aws/aws-sdk-php",
@@ -2075,6 +2075,43 @@
             ],
             "time": "2016-07-19T19:14:21+00:00"
         },
+        {
+            "name": "socialiteproviders/gitlab",
+            "version": "v3.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/SocialiteProviders/GitLab.git",
+                "reference": "c96dc004563a3caf157608fe9aa9e45c79065d00"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/SocialiteProviders/GitLab/zipball/c96dc004563a3caf157608fe9aa9e45c79065d00",
+                "reference": "c96dc004563a3caf157608fe9aa9e45c79065d00",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6 || ^7.0",
+                "socialiteproviders/manager": "~3.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "SocialiteProviders\\GitLab\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Christoffer Martinsen",
+                    "email": "christoffermartinsen@gmail.com"
+                }
+            ],
+            "description": "GitLab OAuth2 Provider for Laravel Socialite",
+            "time": "2017-01-31T05:06:13+00:00"
+        },
         {
             "name": "socialiteproviders/manager",
             "version": "v3.3.0",