Slighlty improved test output

Author: cmaglie

Diff for: internal/integrationtest/main/main_test.go

@@ -46,7 +46,7 @@ func TestVersion(t *testing.T) {
 	require.NoError(t, err)
 	require.Contains(t, string(stdout), "Version:")
 	require.Contains(t, string(stdout), "Commit:")
-	require.Empty(t, stderr)
+	require.Empty(t, string(stderr))
 
 	// Checks if "version --format json" has a json as an output
 	stdout, _, err = cli.Run("version", "--format", "json")