fix prettier phantom dep, add dependency, bump types (#755)

* fix prettier phantom dep, add dependency, bump types

* downgrade prettier version to match root

Author: josefaidt

packages/graphql-generator/package.json

@@ -29,10 +29,11 @@
     "@aws-amplify/graphql-types-generator": "3.4.5",
     "@graphql-codegen/core": "^2.6.6",
     "@graphql-tools/apollo-engine-loader": "^8.0.0",
-    "graphql": "^15.5.0"
+    "graphql": "^15.5.0",
+    "prettier": "^1.19.1"
   },
   "devDependencies": {
-    "@types/prettier": "^1.0.0"
+    "@types/prettier": "^1.19.1"
   },
   "typescript": {
     "definition": "lib/index.d.ts"

yarn.lock

@@ -5725,7 +5725,7 @@
   resolved "https://registry.npmjs.org/@types/pluralize/-/pluralize-0.0.29.tgz#6ffa33ed1fc8813c469b859681d09707eb40d03c"
   integrity sha512-BYOID+l2Aco2nBik+iYS4SZX0Lf20KPILP5RGmM1IgzdwNdTs0eebiFriOPcej1sX9mLnSoiNte5zcFxssgpGA==
 
-"@types/prettier@^1.0.0", "@types/prettier@^1.19.0":
+"@types/prettier@^1.19.0", "@types/prettier@^1.19.1":
   version "1.19.1"
   resolved "https://registry.npmjs.org/@types/prettier/-/prettier-1.19.1.tgz#33509849f8e679e4add158959fdb086440e9553f"
   integrity sha512-5qOlnZscTn4xxM5MeGXAMOsIOIKIbh9e85zJWfBRVPlRMEVawzoPhINYbRGkBZCI8LxvBe7tJCdWiarA99OZfQ==