playwright-go

Roll playwright-go to a new upstream Playwright version. Bumps the pinned CLI version, advances the vendored submodule, finds the API changes from the sibling clients (python/java/dotnet roll PRs) and the upstream docs diff, updates patches/main.patch, regenerates the Go API, and verifies the build. Use when asked to "roll to", "bump", "update to", or "upgrade Playwright" to a version like v1.61.0.