Update dependency drupal/migrate_source_csv to v3.8.0

Author: renovate[bot]

composer.json

@@ -85,7 +85,7 @@
         "drupal/metatag": "2.2.0",
         "drupal/migrate_file": "3.0.0-alpha1",
         "drupal/migrate_plus": "6.0.9",
-        "drupal/migrate_source_csv": "3.7.0",
+        "drupal/migrate_source_csv": "3.8.0",
         "drupal/migrate_tools": "6.1.3",
         "drupal/minisite": "3.0.3",
         "drupal/modifiers": "1.6.0",