ISTWCMS-4820: adding patched version of diff to fix missing headers

composer.json

@@ -31,7 +31,7 @@
         "drupal/ctools": "3.7",
         "drupal/dashboards": "dev-2.0.0-beta12-uw_wcms1",
         "drupal/draggableviews": "2.0.1",
-        "drupal/diff": "1.0",
+        "drupal/diff": "dev-1.0-uw_wcms1",
         "drupal/entity_browser": "2.6",
         "drupal/entity_browser_block": "1.1",
         "drupal/entity_browser_block_layout": "1.0.0-beta1",