Fix: AWS SES Mailer (#365)

As reported on issue #357, the aws ses configuration was not able to
store because of the missing `ses` service config. Additionally was
added a `AWS Region` field to be used by the `ses`.

closes #357

config/services.php

@@ -48,4 +48,10 @@ return [
         'auth_token' => env('CRON_JOB_AUTH_TOKEN', 0),
     ],
 
+    'ses' => [
+        'key' => env('SES_KEY'),
+        'secret' => env('SES_SECRET'),
+        'region' => env('SES_REGION', 'us-east-1'),
+    ],
+
 ];