build(deps): update lodash requirement

Updates the requirements on [lodash](https://github.com/lodash/lodash) to permit the latest version.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.11...4.17.21)

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

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

Author: dependabot[bot]

superset-frontend/plugins/legacy-preset-chart-nvd3/package.json

@@ -34,7 +34,7 @@
     "d3-tip": "^0.9.1",
     "dompurify": "^2.0.6",
     "fast-safe-stringify": "^2.1.1",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.21",
     "moment": "^2.20.1",
     "nvd3-fork": "^2.0.5",
     "prop-types": "^15.8.1",