Chore: Fix goimports order in RelEng packages (#62481)

fix goimports order

pkg/build/packaging/grafana_test.go

@@ -3,9 +3,10 @@ package packaging_test
 import (
 	"testing"
 
+	"github.com/stretchr/testify/assert"
+
 	"github.com/grafana/grafana/pkg/build/config"
 	"github.com/grafana/grafana/pkg/build/packaging"
-	"github.com/stretchr/testify/assert"
 )
 
 func TestPackageRegexp(t *testing.T) {

pkg/build/packaging/rpm_test.go

@@ -5,8 +5,9 @@ import (
 	"path/filepath"
 	"testing"
 
-	"github.com/grafana/grafana/pkg/build/config"
 	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/grafana/pkg/build/config"
 )
 
 const pubKey = `-----BEGIN PGP PUBLIC KEY BLOCK-----