rn-windows update

yarn.lock

@@ -10891,7 +10891,7 @@ react-native-macos@0.60.0-microsoft.73:
     stacktrace-parser "^0.1.3"
     whatwg-fetch "^3.0.0"
 
-react-native-windows@^0.62.6:
+react-native-windows@^0.62.8:
   version "0.62.8"
   resolved "https://registry.yarnpkg.com/react-native-windows/-/react-native-windows-0.62.8.tgz#a9273ce580a58d9da9c1ddac14534ed4dd3e1e10"
   integrity sha512-8qyT+K0Pr1PUrtlPNfB5UZiJT0AyTT+VMBhpfvFO4nnTjKcKkYCNU1Von4lYwboa1VkpnJfp1SYKiKeExnm7zg==