Add default fallback regions for Spaces and B2 adapters

Author: bryannielsen

Adapter/BackblazeB2.php

@@ -27,7 +27,7 @@ public function __construct($settings = [])
                 'key'    => $settings['key'],
                 'secret' => $settings['secret']
             ],
-            'region' => $settings['region'],
+            'region' => $settings['region'] ?: 'east-001',
             'version' => 'latest',
             'endpoint' => "https://s3.{$settings['region']}.backblazeb2.com",
             'exception_class' => \ExpressionEngine\Dependency\Aws\S3\Exception\S3Exception::class

Adapter/DigitalOcean.php

@@ -27,7 +27,7 @@ public function __construct($settings = [])
                 'key'    => $settings['key'],
                 'secret' => $settings['secret']
             ],
-            'region' => $settings['region'],
+            'region' => $settings['region'] ?: 'nyc1',
             'version' => 'latest',
             'endpoint' => "https://{$settings['region']}.digitaloceanspaces.com",
             'exception_class' => \ExpressionEngine\Dependency\Aws\S3\Exception\S3Exception::class