Update full linter list and enable some easily resolved new ones

kyaml/fn/runtime/container/container_test.go

@@ -242,6 +242,7 @@ func TestFilter_ExitCode(t *testing.T) {
 }
 
 func getWorkingDir(t *testing.T) string {
+	t.Helper()
 	wd, err := os.Getwd()
 	require.NoError(t, err)
 	return wd

kyaml/fn/runtime/starlark/starlark.go

@@ -40,8 +40,7 @@ func (sf *Filter) String() string {
 }
 
 func (sf *Filter) Filter(nodes []*yaml.RNode) ([]*yaml.RNode, error) {
-	err := sf.setup()
-	if err != nil {
+	if err := sf.setup(); err != nil {
 		return nil, err
 	}
 	sf.FunctionFilter.Run = sf.Run