Update dependency typescript to v3.4.3

Author: renovate-bot

package.json

@@ -62,7 +62,7 @@
     "react-router-dom": "4.3.1",
     "subscriptions-transport-ws": "0.9.16",
     "ts-node": "8.0.3",
-    "typescript": "3.3.4000"
+    "typescript": "3.4.3"
   },
   "devDependencies": {
     "@babel/core": "7.3.4",

yarn.lock

@@ -10466,10 +10466,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.3.4000:
-  version "3.3.4000"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.4000.tgz#76b0f89cfdbf97827e1112d64f283f1151d6adf0"
-  integrity sha512-jjOcCZvpkl2+z7JFn0yBOoLQyLoIkNZAs/fYJkUG6VKy6zLPHJGfQJYFHzibB6GJaF/8QrcECtlQ5cpvRHSMEA==
+typescript@3.4.3:
+  version "3.4.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.3.tgz#0eb320e4ace9b10eadf5bc6103286b0f8b7c224f"
+  integrity sha512-FFgHdPt4T/duxx6Ndf7hwgMZZjZpB+U0nMNGVCYPq0rEzWKjEDobm4J6yb3CS7naZ0yURFqdw9Gwc7UOh/P9oQ==
 
 uc.micro@^1.0.1, uc.micro@^1.0.5:
   version "1.0.6"