chore: update dependencies and refactor webhook handling

- Added new dependencies for SQLite support and improved HTTP client functionality in go.mod and go.sum.
- Refactored webhook server implementation to utilize a simplified version, enhancing code maintainability.
- Updated API client to leverage a generic request method, streamlining API interactions.
- Modified configuration to include access token for webhook server, improving security.
- Enhanced event handling and request processing in the API client for better performance.

internal/adapter/milky/adapter.go

@@ -185,7 +185,7 @@ func (a *Adapter) startWebhook() error {
 		return fmt.Errorf("webhook_listen_addr is required for webhook mode")
 	}
 
-	a.webhookServer = NewWebhookServer(a.config.WebhookListenAddr, a.logger)
+	a.webhookServer = NewWebhookServer(a.config.WebhookListenAddr, a.config.AccessToken, a.logger)
 
 	// 启动服务器
 	if err := a.webhookServer.Start(); err != nil {