ISTWCMS-5100: Update to filefield_sources 8.x-1.0-alpha4+4-dev

composer.json

@@ -44,7 +44,7 @@
         "drupal/field_group": "3.2",
         "drupal/field_validation": "1.0-beta3",
         "drupal/file_mdm": "2.1",
-        "drupal/filefield_sources": "dev-8.x-1.0-alpha4+3-dev",
+        "drupal/filefield_sources": "dev-8.x-1.0-alpha4+4-dev",
         "drupal/geofield": "1.34",
         "drupal/geofield_map": "2.70",
         "drupal/hcaptcha": "1.1",