Update dependency graphql-code-generator to v0.18.2 [SECURITY]

Author: renovate[bot]

angular-client/package.json

@@ -50,7 +50,7 @@
     "@types/node": "~10.12.0",
     "codelyzer": "~4.5.0",
     "concurrently": "^4.0.1",
-    "graphql-code-generator": "^0.15.0",
+    "graphql-code-generator": "^0.18.0",
     "graphql-codegen-add": "^0.15.0",
     "graphql-codegen-typescript-apollo-angular": "^0.15.0",
     "graphql-codegen-typescript-client": "^0.15.0",

react-client/package.json

@@ -16,7 +16,7 @@
     "apollo-boost": "^0.1.20",
     "concurrently": "4.1.0",
     "graphql": "^14.0.2",
-    "graphql-code-generator": "0.15.0",
+    "graphql-code-generator": "0.18.2",
     "graphql-codegen-typescript-client": "0.15.0",
     "graphql-codegen-typescript-mongodb": "0.15.0",
     "graphql-codegen-typescript-react-apollo": "0.15.2",