chore(deps-dev): bump lodash in /examples/graphql

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.13 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.13...4.17.19)

Signed-off-by: dependabot[bot] <support@github.com>

examples/graphql/package.json

@@ -37,7 +37,7 @@
     "graphql": "^14.5.3",
     "graphql-tag": "^2.10.1",
     "graphql-tools": "^4.0.5",
-    "lodash": "^4.17.13",
+    "lodash": "^4.17.19",
     "mocha": "^5.1.1",
     "node-fetch": "^2.2.0",
     "nyc": "^15.0.0-beta.0",