Issue #3464404 by enriquelacoma: Move http_request_mock to require-dev

composer.json

 {
     "name": "drupal/pwbi",
     "type": "drupal-module",
+    "description": "Provides tools to integrate Power BI into Drupal.",
+    "license": "GPL-2.0-or-later",  
     "authors": [
         {
             "name": "Enrique Lacoma",
@@ -9,7 +11,9 @@
     ],
     "require": {
       "drupal/oauth2_client": "^4.1",
-      "php": ">=8.1",
+      "php": ">=8.1"
+    },
+    "require-dev": {
       "drupal/http_request_mock": "^1.1"
     }
 }