fix: resolve golangci-lint issues

.golangci.yaml

@@ -75,6 +75,8 @@ linters:
           disabled: true
         - name: package-comments
           disabled: true
+        - name: use-waitgroup-go
+          disabled: true
     gocritic:
       disabled-checks:
         - ifElseChain

server/router/api/v1/test/attachment_service_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/require"
+
 	v1pb "github.com/usememos/memos/proto/gen/api/v1"
 )