v1.52.0

## Highlights
- New method [expect(locator).toContainClass()](https://playwright.dev/docs/api/class-locatorassertions#locator-assertions-to-contain-class) to ergonomically assert individual class names on the element.
  
  ```ts
  await expect(page.getByRole('listitem', { name: 'Ship v1.52' })).toContainClass('done');
  ```
  
- [Aria Snapshots](https://playwright.dev/docs/aria-snapshots) got two new properties: [`/children`](https://playwright.dev/docs/aria-snapshots#strict-matching) for strict matching and `/url` for links.
  
  ```ts
  await expect(locator).toMatchAriaSnapshot(`
    - list
      - /children: equal
      - listitem: Feature A
      - listitem:
        - link "Feature B":
          - /url: "https://playwright.dev"
  `);
  ```
  
## Test Runner
- New property [testProject.workers](https://playwright.dev/docs/api/class-testproject#test-project-workers) allows to specify the number of concurrent worker processes to use for a test project. The global limit of property [testConfig.workers](https://playwright.dev/docs/api/class-testconfig#test-config-workers) still applies.
- New [testConfig.failOnFlakyTests](https://playwright.dev/docs/api/class-testconfig#test-config-fail-on-flaky-tests) option to fail the test run if any flaky tests are detected, similarly to `--fail-on-flaky-tests`. This is useful for CI/CD environments where you want to ensure that all tests are stable before deploying.
- New property [testResult.annotations](https://playwright.dev/docs/api/class-testresult#test-result-annotations) contains annotations for each test retry.

## Miscellaneous
- New option [`maxRedirects`](https://playwright.dev/docs/api/class-apirequest#api-request-new-context-option-max-redirects) in [apiRequest.newContext()](https://playwright.dev/docs/api/class-apirequest#api-request-new-context) to control the maximum number of redirects.
- HTML reporter now supports *NOT filtering* via `!@my-tag` or `!my-file.spec.ts` or `!p:my-project`.

## Breaking Changes
- Changes to glob URL patterns in methods like [page.route()](https://playwright.dev/docs/api/class-page#page-route):
  - `?` wildcard is not supported any more, it will always match question mark `?` character.
  - Ranges/sets `[]` are not supported anymore. We recommend using regular expressions instead.
- Method [route.continue()](https://playwright.dev/docs/api/class-route#route-continue) does not allow to override the `Cookie` header anymore. If a `Cookie` header is provided, it will be ignored, and the cookie will be loaded from the browser's cookie store. To set custom cookies, use [browserContext.addCookies()](https://playwright.dev/docs/api/class-browsercontext#browser-context-add-cookies).
- macOS 13 is now deprecated and will no longer receive WebKit updates. Please upgrade to a more recent macOS version to continue benefiting from the latest WebKit improvements.

## Browser Versions
- Chromium 136.0.7103.25
- Mozilla Firefox 137.0
- WebKit 18.4

This version was also tested against the following stable channels:
- Google Chrome 135
- Microsoft Edge 135