Add social auth

Author: jonpugh

composer.json

@@ -17,6 +17,8 @@
         "drupal/devel_entity_updates": "^4.1",
         "drupal/hosting_site": "dev-main",
         "drupal/site": "2.x-dev",
+        "drupal/social_auth_github": "^4.0",
+        "drupal/social_auth_google": "^4.0",
         "drush/drush": "^12.4.3",
         "oomphinc/composer-installers-extender": "^2.0",
         "vlucas/phpdotenv": "^5.1",