Bump lodash from 4.17.13 to 4.17.21 in /samples/react-typescript

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.13 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.13...4.17.21)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: direct:production
...

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

Author: dependabot[bot]

samples/react-typescript/package-lock.json

@@ -86,7 +86,7 @@
     "i18next-fetch-backend": "~2.2.0",
     "ipaddr.js": "~1.9.0",
     "isomorphic-fetch": "~2.2.1",
-    "lodash": "4.17.13",
+    "lodash": "4.17.21",
     "node-cache": "^4.2.0",
     "node-fetch": "~2.3.0",
     "node-noop": "^1.0.0",