chore(deps): update dependency @types/graphql to v0.12.7

Author: renovate-bot

package.json

@@ -21,7 +21,7 @@
     "graphql-tools": "2.21.0"
   },
   "devDependencies": {
-    "@types/graphql": "0.12.6",
+    "@types/graphql": "0.12.7",
     "@types/node": "9.6.0",
     "typescript": "2.8.1"
   },

yarn.lock

@@ -2,9 +2,9 @@
 # yarn lockfile v1
 
 
-"@types/graphql@0.12.6":
-  version "0.12.6"
-  resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.12.6.tgz#3d619198585fcabe5f4e1adfb5cf5f3388c66c13"
+"@types/graphql@0.12.7":
+  version "0.12.7"
+  resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.12.7.tgz#392e46d6c1bceb7d68c117233cea787dde72780c"
 
 "@types/node@9.6.0":
   version "9.6.0"