Add setChecked to release notes

release notes/v0.54.0.md

@@ -165,6 +165,17 @@ const huge = BigInt(9007199254740991);
 
 Note: that prior k6 version v0.54, Golang's type `math/big.Int` mapped to another type, so it might be a breaking change for some extensions or users.
 
+### New `setChecked` method for the browser module [`#3914`](https://github.com/grafana/xk6-browser/pull/1403)
+
+Previously, users could check or uncheck checkbox and radio button elements using the [`check`](https://grafana.com/docs/k6/latest/javascript-api/k6-browser/page/check/) and [`uncheck`](https://grafana.com/docs/k6/latest/javascript-api/k6-browser/page/uncheck/) methods. Now, we've added a `setChecked` method that allows users to set either the checked or unchecked state of a checkbox or radio button with a single method and a boolean argument.
+
+```javascript
+await page.setChecked('#checkbox', true);   // check the checkbox
+await page.setChecked('#checkbox', false);  // uncheck the checkbox
+```
+
+[Page](https://grafana.com/docs/k6/next/javascript-api/k6-browser/page/setchecked/), [Frame](https://grafana.com/docs/k6/next/javascript-api/k6-browser/frame/), [ElementHandle](https://grafana.com/docs/k6/next/javascript-api/k6-browser/elementhandle/), and [Locator](https://grafana.com/docs/k6/next/javascript-api/k6-browser/locator/) now support the new `setChecked` method.
+
 ## UX improvements and enhancements
 
 - [#3898](https://github.com/grafana/k6/pull/3898) adds `SetupTimeout` option validation. Thank you, @tsukasaI!