chore: fix linting issues exposed by fixing golangci-lint (#12895)

Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

tx/textual/valuerenderer/bytes.go

@@ -9,8 +9,7 @@ import (
 )
 
 // bytesValueRenderer implements ValueRenderer for bytes
-type bytesValueRenderer struct {
-}
+type bytesValueRenderer struct{}
 
 var _ ValueRenderer = bytesValueRenderer{}
 

tx/textual/valuerenderer/bytes_test.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/hex"
 	"encoding/json"
-	"io/ioutil"
+	"os"
 	"strings"
 	"testing"
 
@@ -14,7 +14,7 @@ import (
 
 func TestFormatBytes(t *testing.T) {
 	var testcases []bytesTest
-	raw, err := ioutil.ReadFile("../internal/testdata/bytes.json")
+	raw, err := os.ReadFile("../internal/testdata/bytes.json")
 	require.NoError(t, err)
 
 	err = json.Unmarshal(raw, &testcases)

tx/textual/valuerenderer/valuerenderer_test.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strconv"
 	"strings"
 	"testing"
@@ -20,7 +20,7 @@ import (
 func TestFormatInteger(t *testing.T) {
 	type integerTest []string
 	var testcases []integerTest
-	raw, err := ioutil.ReadFile("../internal/testdata/integers.json")
+	raw, err := os.ReadFile("../internal/testdata/integers.json")
 	require.NoError(t, err)
 	err = json.Unmarshal(raw, &testcases)
 	require.NoError(t, err)
@@ -67,7 +67,7 @@ func TestFormatInteger(t *testing.T) {
 func TestFormatDecimal(t *testing.T) {
 	type decimalTest []string
 	var testcases []decimalTest
-	raw, err := ioutil.ReadFile("../internal/testdata/decimals.json")
+	raw, err := os.ReadFile("../internal/testdata/decimals.json")
 	require.NoError(t, err)
 	err = json.Unmarshal(raw, &testcases)
 	require.NoError(t, err)