fix: pin alibabacloud_green20220302<3.5.0 to avoid websocketUtils_models ImportError

alibabacloud_green20220302 3.5.0+ imports MultiModalGuardWsResponse
which requires websocketUtils_models from alibabacloud_tea_openapi,
but no published version of alibabacloud_tea_openapi includes that
module, causing ImportError and breaking avatar uploads with
'阿里云图片审核 SDK 未安装' error.

Author: NullResot

backend/requirements.txt

@@ -9,6 +9,6 @@ gunicorn>=23.0.0,<24.0
 whitenoise>=6.8.2,<7.0
 alibabacloud_cloudauth20190307>=3.13.2,<4.0.0
 alibabacloud_dypnsapi20170525>=2.0.0,<3.0.0
-alibabacloud_green20220302>=3.2.3,<4.0.0
+alibabacloud_green20220302>=3.2.3,<3.5.0
 alibabacloud_tea_openapi>=0.4.4,<1.0.0
 alibabacloud_tea_util>=0.3.14,<1.0.0