chore(deps): update dependency typescript to v3.4.3

Author: renovate-bot

package.json

@@ -24,7 +24,7 @@
     "graphql-cli": "3.0.11",
     "@types/graphql": "14.2.0",
     "@types/node": "10.12.24",
-    "typescript": "3.4.2"
+    "typescript": "3.4.3"
   },
   "repository": {
     "type": "git",

yarn.lock

@@ -2909,9 +2909,9 @@ type-is@^1.6.16, type-is@~1.6.16:
     media-typer "0.3.0"
     mime-types "~2.1.18"
 
-typescript@3.4.2:
-  version "3.4.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.2.tgz#9ed4e6475d906f589200193be056f5913caed481"
+typescript@3.4.3:
+  version "3.4.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.3.tgz#0eb320e4ace9b10eadf5bc6103286b0f8b7c224f"
 
 unique-string@^1.0.0:
   version "1.0.0"