#1544 Update Migrate Plus to 8.x-5.1, Migrate Tools to 8.x-5.0 (#784)

Co-authored-by: Jonathan Hunt <git@huntdesign.co.nz>

composer.json

@@ -23,8 +23,8 @@
     "drupal/prepopulate" : "^2.2",
     "drupal/eva" : "^2.0",
     "drupal/features" : "^3.7",
-    "drupal/migrate_plus" : "^4.1",
-    "drupal/migrate_tools" : "^4.1",
+    "drupal/migrate_plus" : "^5.1",
+    "drupal/migrate_tools" : "^5.0",
     "drupal/migrate_source_csv" : "^2.1",
     "drupal/token" : "^1.3",
     "drupal/flysystem" : "^1.0",