Composer update

* updated Laravel to v5.6.38
* Added laravel tinker in dev dependencies

vendor/aws/aws-sdk-php/.changes/3.67.6

@@ -0,0 +1,27 @@
+[
+    {
+        "type": "api-change",
+        "category": "AppStream",
+        "description": "Added support for enabling persistent application settings for a stack. When these settings are enabled, changes that users make to applications and Windows settings are automatically saved after each session and applied to the next session."
+    },
+    {
+        "type": "api-change",
+        "category": "DynamoDB",
+        "description": "New feature for Amazon DynamoDB."
+    },
+    {
+        "type": "enhancement",
+        "category": "RDS",
+        "description": "Fix broken links in the RDS CLI Reference to the Aurora User Guide"
+    },
+    {
+        "type": "api-change",
+        "category": "S3",
+        "description": "Parquet input format support added for the SelectObjectContent API"
+    },
+    {
+        "type": "api-change",
+        "category": "ElasticLoadBalancing",
+        "description": "Documentation update for DescribeAccountLimits API to include classic-registered-instances."
+    }
+]