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>

binding/plain.go

@@ -15,7 +15,7 @@ func (plainBinding) Name() string {
 	return "plain"
 }
 
-func (plainBinding) Bind(req *http.Request, obj interface{}) error {
+func (plainBinding) Bind(req *http.Request, obj any) error {
 	all, err := io.ReadAll(req.Body)
 	if err != nil {
 		return err