Composer update

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

vendor/aws/aws-sdk-php/.changes/3.67.9

@@ -0,0 +1,12 @@
+[
+    {
+        "type": "api-change",
+        "category": "CloudHSMV2",
+        "description": "With this release, we are adding 2 new APIs. DeleteBackup deletes a specified AWS CloudHSM backup. A backup can be restored up to 7 days after the DeleteBackup request. During this 7-day period, the backup will be in state PENDING_DELETION. Backups can be restored using the RestoreBackup API, which will move the backup from state PENDING_DELETION back to ACTIVE."
+    },
+    {
+        "type": "api-change",
+        "category": "Redshift",
+        "description": "Adding support to Redshift to change the encryption type after cluster creation completes."
+    }
+]