Go 1.16 and later required, migration of deprecation package `ioutil`

- Improving performance for stream writer `SetRow` function,  reduces memory usage over and speedup about 19%
- Update dependencies module
- Update GitHub workflow

1 files changed, 1 insertions, 2 deletions

diff --git a/excelize_test.go b/excelize_test.go
index e685b66..12d155d 100644
--- a/excelize_test.go
+++ b/excelize_test.go
@@ -10,7 +10,6 @@ import (
 	_ "image/gif"
 	_ "image/jpeg"
 	_ "image/png"
-	"io/ioutil"
 	"math"
 	"os"
 	"path/filepath"
@@ -1388,7 +1387,7 @@ func prepareTestBook1() (*File, error) {
 		return nil, err
 	}
 
-	file, err := ioutil.ReadFile(filepath.Join("test", "images", "excel.jpg"))
+	file, err := os.ReadFile(filepath.Join("test", "images", "excel.jpg"))
 	if err != nil {
 		return nil, err
 	}