Issue #3337816 by No Sssweat, jurgenhaas: Replace API client with composer package

composer.json

@@ -8,7 +8,7 @@
     "source": "https://drupal.org/project/elastic_email"
   },
   "require": {
-    "php": ">=7.4",
+    "php": ">=8.1",
     "drupal/mailsystem": "^4.4",
     "elasticemail/elasticemail-php": "^4.0"
   }

elastic_email.info.yml

 name: 'Elastic Email'
 type: module
 description: 'Sends Drupal email via the Elastic Email service.'
-core_version_requirement: ^9.5 || ^10
+core_version_requirement: ^10
 package: Mail
 configure: elastic_email.admin_settings
 dependencies: