PuppeteerSharp 1.13.0

# Breaking Changes * Response.Headers changed from `Dictionary<string, object>` to `Dictionary<string, string>` # Changelog * PdfOptions should be serializable. * Bump chromium to r637110. * SetCacheEnable and WaitFor test updates. * Input and target tests updates. * Emulate and SetUserAgent test updates. * ShouldEnableOrDisableTheCacheBasedOnTheStatePassed test improvements. * Exclude favicon from tests. * Disable flaky cookies test. * Add failing for test for mobile + cross process navigation. * RequestPostDataTests tests. * Update ConsoleMessage.Location comments. * WaitForNavigationTests updates. * Beforeunload tests updates. * New connect test. * CloseTests updates. * SetRequestInterceptionTests changes. * WaitForTests changes. * ElementHandlePress tests updates. * ExposeFunction improvements. * Launcher tests refactor. * Touchscreen tests improvements. * Add failing test for bad request interception. * Override Permissions tests changes. * Split out fixtures tests. * Move some chromium specific tests. * Keyboards tests. * Add page.accessibility.snapshot tests. * Test refactors. * Cookies tests improvements. * Click and Goto tests refactors. * Minor test changes. * Network tests refactor.