Bump Chromium version to 575458 (#612)

Author: kblok

lib/PuppeteerSharp/BrowserFetcher.cs

@@ -36,7 +36,7 @@ public class BrowserFetcher
         /// <summary>
         /// Default chromiumg revision.
         /// </summary>
-        public const int DefaultRevision = 571375;
+        public const int DefaultRevision = 575458;
 
         /// <summary>
         /// Gets the downloads folder.