Bump lodash from 4.17.19 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.19 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.19...4.17.21)

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

Author: dependabot[bot]

package-lock.json

@@ -29,7 +29,7 @@
         "immutable": "4.0.0-rc.12",
         "jest": "25.5.4",
         "jest-extended": "0.11.5",
-        "lodash": "4.17.19",
+        "lodash": "4.17.21",
         "prettier": "1.19.1",
         "rimraf": "2.6.2",
         "rosie": "2.0.1",