fix test increase screenshot comparing threshold

Author: GoodDayForSurf

packages/devextreme-cli/testing/app-template.test.shared.js

@@ -284,7 +284,7 @@ module.exports = (env, { port = 8080, urls = {} } = {}) => {
                                     const image = await takeScreenshot();
 
                                     compareSnapshot(image, 'create-account', {
-                                        threshold: 0.05
+                                        threshold: 0.025
                                     });
                                 });