Issue #3147278 by osopolar, nmitev: Automated Drupal 9 compatibility fixes

composer.json

@@ -24,7 +24,7 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "drupal/elasticsearch_connector": "^7.0-alpha2",
+        "drupal/elasticsearch_connector": "^8.0.x-dev",
         "jsq/amazon-es-php": "^0.3.0",
         "drupal/key": "^1.14"
     }