Bump lodash from 4.17.15 to 4.17.19

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.19.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.19

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

package.json

@@ -79,7 +79,7 @@
     "hopscotch": "0.3.1",
     "ip-regex": "4.1.0",
     "is-cidr": "3.1.0",
-    "lodash": "4.17.15",
+    "lodash": "4.17.19",
     "mobx-angular": "3.0.1",
     "ng-chartist": "4.1.0",
     "ng2-charts": "1.6.0",