fix: fix http Method Not Allowed (#8731)

修复获取验证码的http方法

src/services/ant-design-pro/login.ts

@@ -12,7 +12,7 @@ export async function getFakeCaptcha(
   options?: { [key: string]: any },
 ) {
   return request<API.FakeCaptcha>('/api/login/captcha', {
-    method: 'POST',
+    method: 'GET',
     params: {
       ...params,
     },