D8NID-1726 ~ Update core and xls_serialization

Author: omahm

composer.json

@@ -150,7 +150,7 @@
         "drupal/views_data_export": "^1.0",
         "drupal/webform": "^6.2",
         "drupal/whatlinkshere": "^2.1",
-        "drupal/xls_serialization": "^1.4",
+        "drupal/xls_serialization": "^2.0",
         "drush/drush": "^12.5",
         "geocoder-php/google-maps-provider": "^4.6",
         "harvesthq/chosen": "^1.8",
@@ -196,7 +196,8 @@
             "oomphinc/composer-installers-extender": true,
             "phpstan/extension-installer": true,
             "zaporylie/composer-drupal-optimizations": true,
-            "php-http/discovery": true
+            "php-http/discovery": true,
+            "tbachert/spi": true
         }
     },
     "extra": {