feat: add OpenAI configuration to testing environment and update model in tests

.env.testing

@@ -74,3 +74,8 @@ BUNNYCDN_STORAGE_ZONE=testing_storage_zone
 BUNNYCDN_PULL_ZONE=https://testing.b-cdn.net
 BUNNYCDN_API_KEY="api-key"
 BUNNYCDN_REGION=de
+
+AI_PROVIDER=openai
+OPENAI_URL=https://api.test-provider.com/v1/chat/completions
+OPENAI_API_KEY=fake-api-key
+OPENAI_MODEL=gpt-4o-mini
\ No newline at end of file

tests/Feature/Service/AiProviderServiceTest.php

@@ -24,7 +24,7 @@ class AiProviderServiceTest extends TestCase
         'id' => 'chat_1',
         'object' => 'chat.completion',
         'created' => 1739718124,
-        'model' => 'gpt-4o-mini-2024-07-18',
+        'model' => 'gpt-4o-mini',
         'choices' => [
             [
                 'index' => 0,