Removes output directory configuration

Removes the explicit `outputDir` configuration from the Playwright config.

The default output directory is sufficient and allows for more flexibility in test execution and reporting.

playwright-tests/playwright.config.ts

@@ -66,7 +66,6 @@ export default defineConfig({
   ],
   timeout: 180_000,
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
-  outputDir: 'artifacts/test-results',
   use: {
     /* Base URL to use in actions like `await page.goto('/')`. */
     // baseURL: 'http://127.0.0.1:3000',