fix: lint errors

internal/platform/slack/slack.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"time"
@@ -37,11 +37,15 @@ func (s *SlackPlatform) Init(_ *config.Config) error {
 // ParseIncomingMessage parses an incoming Slack message
 func (s *SlackPlatform) ParseIncomingMessage(r *http.Request) (*model.Message, error) {
 	// Read request body
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		return nil, err
 	}
-	defer r.Body.Close()
+	defer func() {
+		if err := r.Body.Close(); err != nil {
+			fmt.Printf("Error closing request body: %v\n", err)
+		}
+	}()
 
 	// Parse JSON
 	var requestData map[string]interface{}
@@ -194,7 +198,11 @@ func (s *SlackPlatform) SendMessage(msg *model.Message) error {
 	if err != nil {
 		return err
 	}
-	defer resp.Body.Close()
+	defer func() {
+		if err := resp.Body.Close(); err != nil {
+			fmt.Printf("Error closing response body: %v\n", err)
+		}
+	}()
 
 	// Check response
 	if resp.StatusCode != http.StatusOK {
@@ -209,4 +217,4 @@ func parseInt64(s string) (int64, error) {
 	var n int64
 	_, err := fmt.Sscanf(s, "%d", &n)
 	return n, err
-}
+}