fix: add .SANDBOX_BANNED_HOSTS to .gitignore

Author: liuruibin

.gitignore

@@ -188,4 +188,5 @@ apps/models_provider/impl/*/icon/
 apps/models_provider/impl/tencent_model_provider/credential/stt.py
 apps/models_provider/impl/tencent_model_provider/model/stt.py
 tmp/
-config.yml
+config.yml
+.SANDBOX_BANNED_HOSTS