Replace interface{} with any (#25686) (#25687)

Same perl replacement as https://github.com/go-gitea/gitea/pull/25686
but for 1.20 to ease future backporting.

tests/integration/api_admin_test.go

@@ -207,7 +207,7 @@ func TestAPIEditUser(t *testing.T) {
 	})
 	resp := MakeRequest(t, req, http.StatusUnprocessableEntity)
 
-	errMap := make(map[string]interface{})
+	errMap := make(map[string]any)
 	json.Unmarshal(resp.Body.Bytes(), &errMap)
 	assert.EqualValues(t, "email is not allowed to be empty string", errMap["message"].(string))