With Cypress, you can easily create tests for your modern web applications, debug them visually, and automatically run them in your continuous integration builds.

Cypress Community

I dont know if this works, because this is based on an older cypress where you could change the browser lang.

but in your cypress.config.js you can add the following before browser launch.

```js
module.exports = defineConfig({
  e2e: {
    setupNodeEvents(on, config) {
      on("before:browser:launch", (browser = {}, launchOptions)=>{
        if (browser.name === 'chrome') {
          launchOptions.args.push('--lang=uk');
          return launchOptions;
        }
      })
    },
  },
})
```