fix: optimized the GitHub login copy and timeout.

controller/github.go

@@ -44,7 +44,7 @@ func getGitHubUserInfoByCode(code string) (*GitHubUser, error) {
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Accept", "application/json")
 	client := http.Client{
-		Timeout: 5 * time.Second,
+		Timeout: 20 * time.Second,
 	}
 	res, err := client.Do(req)
 	if err != nil {