Bump lodash from 4.17.2 to 4.17.19

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.2 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.2...4.17.19)

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

package.json

@@ -35,7 +35,7 @@
     "chai": "3.5.0",
     "coveralls": "2.11.15",
     "eslint": "3.10.2",
-    "lodash": "4.17.2",
+    "lodash": "4.17.19",
     "mocha": "3.1.2"
   }
 }