refactor: replace interface{} with any in type declarations (#4249)

- Update golangci.yml to use 'any' instead of 'interface{}' in gofmt
- Modify debug.go, plain.go, and render_test.go to use 'any' type
- Improve code readability and follow modern Go conventions

Signed-off-by: Flc <four_leaf_clover@foxmail.com>

render/render_test.go

@@ -608,7 +608,7 @@ func TestRenderReaderNoContentLength(t *testing.T) {
 }
 
 func TestRenderWriteError(t *testing.T) {
-	data := []interface{}{"value1", "value2"}
+	data := []any{"value1", "value2"}
 	prefix := "my-prefix:"
 	r := SecureJSON{Data: data, Prefix: prefix}
 	ew := &errorWriter{