Bump lodash from 4.17.11 to 4.17.13 in /dev-portal

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.13.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.11...4.17.13)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

dev-portal/package-lock.json

@@ -7,7 +7,7 @@
     "chart.js": "^2.7.2",
     "front-matter": "^3.0.0",
     "jwt-decode": "^2.2.0",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.13",
     "mobx": "^5.5.0",
     "mobx-react": "^5.2.8",
     "object-hash": "^1.3.1",