fix(deps): update dependency react-native-web to v0.9.12

Author: renovate-bot

packages/web/package.json

@@ -22,7 +22,7 @@
     "react-app-polyfill": "0.2.0",
     "react-art": "16.7.0-alpha.2",
     "react-dom": "16.7.0-alpha.2",
-    "react-native-web": "0.9.10",
+    "react-native-web": "0.9.12",
     "react-scripts": "2.1.1",
     "resize-observer-polyfill": "1.5.1",
     "smoothscroll-polyfill": "0.4.3"