Bump lodash-es from 4.17.15 to 4.17.21

Bumps [lodash-es](https://github.com/lodash/lodash) from 4.17.15 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.15...4.17.21)

---
updated-dependencies:
- dependency-name: lodash-es
  dependency-type: direct:development
...

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

package.json

@@ -45,7 +45,7 @@
     "flow-typed": "^3.2.1",
     "html-webpack-plugin": "^4.5.0",
     "husky": "^4.3.0",
-    "lodash-es": "^4.17.15",
+    "lodash-es": "^4.17.21",
     "style-loader": "^1.3.0",
     "webpack": "^4.44.0",
     "webpack-cli": "^3.3.0",