Set to headless mode

Author: wakaleo

src/test/java/com/serenitydojo/playwright/ASimplePlaywrightTest.java

@@ -18,7 +18,7 @@ public static void setUpBrowser() {
         playwright = Playwright.create();
         browser = playwright.chromium().launch(
                 new BrowserType.LaunchOptions()
-                        .setHeadless(false)
+                        .setHeadless(true)
                         .setArgs(Arrays.asList("--no-sandbox","--disable-extensions","--disable-gpu"))
         );
         browserContext = browser.newContext();