Enable addtional linters (#34085)

enable mirror, usestdlibbars and perfsprint 
part of: https://github.com/go-gitea/gitea/issues/34083

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/validation/binding_test.go

@@ -47,7 +47,7 @@ func performValidationTest(t *testing.T, testCase validationTestCase) {
 		assert.Equal(t, testCase.expectedErrors, actual)
 	})
 
-	req, err := http.NewRequest("POST", testRoute, nil)
+	req, err := http.NewRequest(http.MethodPost, testRoute, nil)
 	if err != nil {
 		panic(err)
 	}