chore(deps): update dependency @types/node to v10.12.21 (#425)

Author: renovate[bot]

packages/create-graphqlgen/package.json

@@ -32,7 +32,7 @@
     "@types/execa": "0.9.0",
     "@types/inquirer": "0.0.43",
     "@types/meow": "5.0.0",
-    "@types/node": "10.12.19",
+    "@types/node": "10.12.21",
     "@types/ora": "3.0.0",
     "@types/parse-github-url": "1.0.0",
     "@types/request": "2.48.1",

packages/graphqlgen/package.json

@@ -60,7 +60,7 @@
     "@types/jest": "23.3.13",
     "@types/js-yaml": "3.12.0",
     "@types/mkdirp": "0.5.2",
-    "@types/node": "10.12.19",
+    "@types/node": "10.12.21",
     "@types/prettier": "1.15.2",
     "@types/rimraf": "2.0.2",
     "@types/yargs": "12.0.8",